336571513709254614
336,571,513,709,254,614 is an even composite number composed of seven prime numbers multiplied together.
336571513709254614 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one thousand, nine hundred forty-four divisors.
Prime factorization of 336571513709254614:
2 × 33 × 72 × 232 × 292 × 372 × 4572
(2 × 3 × 3 × 3 × 7 × 7 × 23 × 23 × 29 × 29 × 37 × 37 × 457 × 457)See below for interesting mathematical facts about the number 336571513709254614 from the Numbermatics database.
Names of 336571513709254614
- Cardinal: 336571513709254614 can be written as Three hundred thirty-six quadrillion, five hundred seventy-one trillion, five hundred thirteen billion, seven hundred nine million, two hundred fifty-four thousand, six hundred fourteen.
Scientific notation
- Scientific notation: 3.36571513709254614 × 1017
Factors of 336571513709254614
Divisors of 336571513709254614
- Number of divisors d(n): 1944
-
Complete list of divisors:
1 2 3 6 7 9 14 18 21 23 27 29 37 42 46 49 54 58 63 69 74 87 98 111 126 138 147 161 174 189 203 207 222 259 261 294 322 333 378 406 414 441 457 483 518 522 529 609 621 666 667 777 783 841 851 882 914 966 999 1058 1073 1127 1218 1242 1323 1334 1369 1371 1421 1449 1554 1566 1587 1682 1702 1813 1827 1998 2001 2146 2254 2331 2523 2553 2646 2738 2742 2842 2898 3174 3199 3219 3381 3626 3654 3703 4002 4107 4113 4263 4347 4662 4669 4761 5046 5106 5439 5481 5887 5957 6003 6398 6438 6762 6993 7406 7511 7569 7659 8214 8226 8526 8694 9338 9522 9583 9597 9657 10143 10511 10878 10962 11109 11774 11914 12006 12321 12339 12789 13253 13986 14007 14283 15022 15138 15318 15341 16317 16909 17661 17871 18009 19166 19194 19314 19343 19573 20286 21022 22218 22393 22533 22707 22977 24642 24678 24679 25578 25921 26506 28014 28566 28749 28791 28971 30429 30682 31117 31487 31533 32634 32683 33327 33818 35322 35742 36018 36963 38367 38686 39146 39701 39759 41209 41699 42021 44786 45066 45414 45954 46023 48951 49358 50727 51842 52577 52983 53613 57498 57582 57942 58029 58719 60858 62234 62974 63066 65366 66654 67081 67179 67599 73577 73926 74037 76734 77763 79402 79518 82418 83398 84042 86247 86373 92046 92771 93351 94461 94599 97902 98049 99981 101454 105154 105966 107226 107387 116058 117438 118363 119103 119277 123627 125097 126063 134162 134358 135198 135401 137011 138069 147154 148074 152181 155526 157731 158949 160839 172494 172746 172753 174087 176157 185542 186702 188922 189198 196098 199962 201243 201537 202797 208849 214774 217819 220409 220731 222111 233289 236726 238206 238554 241753 247254 250194 252126 258741 270802 274022 276138 277907 278313 280053 283383 283797 294147 304362 304819 315462 317898 321678 322161 345506 348174 352314 355089 357309 357831 370881 375291 384337 388907 402486 403074 405594 406203 411033 414207 417698 435638 440818 441462 444222 444889 456543 466578 473193 483506 490361 515039 517482 518259 522261 528471 555814 556626 560106 566766 567594 567617 588294 603729 604611 609638 625633 626547 644322 649397 653457 661227 662193 666333 699867 710178 714618 715662 715691 724201 725259 741762 750582 751709 768674 777814 812406 822066 828414 828541 833721 834939 840159 850149 882441 889778 913086 913123 914457 946386 947807 959077 966483 980722 1030078 1036518 1044522 1056942 1065267 1071927 1112643 1125873 1135234 1151329 1153011 1166721 1207458 1209222 1209271 1218609 1233099 1251266 1253094 1298794 1306914 1322454 1324386 1332666 1334667 1399734 1419579 1431382 1448402 1450518 1461943 1471083 1503418 1524733 1542863 1545117 1554777 1657082 1667442 1669878 1680318 1692271 1700298 1702851 1764882 1811187 1826246 1828914 1876899 1879641 1895614 1918154 1932966 1945349 1948191 1960371 1983681 1986579 2130534 2133733 2143854 2147073 2172603 2175777 2225286 2251746 2255127 2302658 2306022 2333442 2418542 2437218 2466198 2485623 2501163 2504817 2669334 2690359 2722349 2739369 2743371 2839158 2843421 2877231 2899449 2923886 2942166 3049466 3085726 3090234 3109554 3114223 3195801 3384542 3405702 3432527 3453987 3459033 3500163 3622374 3627813 3655827 3699297 3753798 3759282 3890698 3896382 3920742 3967362 3973158 3973319 4004001 4267466 4294146 4345206 4351554 4379431 4385829 4413249 4510254 4574199 4628589 4635351 4664331 4803527 4971246 5002326 5009634 5009837 5069407 5076813 5108553 5380718 5444698 5478738 5486742 5630697 5638923 5686842 5754462 5798898 5836047 5844573 5881113 5951043 6056621 6228446 6391602 6391861 6401199 6441219 6517809 6527331 6765381 6865054 6907974 6918066 7000326 7010837 7255626 7311654 7398594 7456869 7503489 7727413 7946638 8008002 8059303 8071077 8167047 8218107 8230113 8530263 8631693 8758862 8771658 8826498 8839751 8944861 9148398 9257178 9270702 9328662 9342669 9607054 10019674 10138814 10153626 10217106 10233601 10297581 10361961 10377099 10500489 10883439 11261394 11277846 11278303 11672094 11689146 11762226 11845897 11902086 11919957 12012003 12113242 12783722 12802398 12882438 13035618 13054662 13138293 13157487 13239747 13530762 13722597 13885767 13906053 14021674 14220469 14389559 14410581 14913738 14936131 15006978 15029511 15208221 15230439 15325659 15454826 16118606 16142154 16334094 16436214 16460226 16460893 16892091 17060526 17263386 17508141 17533719 17679502 17889722 18143357 18169863 18685338 18832513 19056443 19175583 19203597 19323657 19553427 20296143 20467202 20595162 20723922 20754198 21000978 21001829 21032511 21766878 21799561 22370607 22556606 23182239 23691794 23839914 24024006 24027689 24177909 24213231 24501141 24654321 25590789 25895079 26276586 26314974 26479494 26480567 26519253 26834583 27445194 27771534 27812106 27813233 28028007 28440938 28779118 28821162 29872262 30059022 30416442 30460878 30651318 30656017 30700803 30892743 31085883 32650317 32921786 33624689 33784182 33834909 35016282 35067438 35068859 35485849 35537691 35759871 36286714 36339726 37665026 38112886 38351166 38407194 38647314 39106854 39414879 39472461 40592286 41167791 41657301 42003658 42065022 42396347 42661407 43168677 43231743 43599122 44741214 44743027 44808393 45088533 45624663 45691317 46364478 48055378 48355818 48426462 49002282 49075859 49308642 49382679 51181578 51790158 52524423 52961134 53038506 53669166 54091891 54430071 54509589 55626466 56056014 56415121 56497539 57169329 57526749 57610791 61312034 61401606 61785486 61878257 62171766 62614027 63005487 63097533 65300634 65398683 67249378 67669818 69546717 70137718 70971698 71075382 71519742 72083067 72533727 72639693 73503423 78829758 78944922 78948121 79441701 79557759 80503749 82335582 83314602 83439699 84084021 84792694 85322814 86337354 86463486 89486054 89616786 90177066 91249326 91382634 91968051 92102409 92678229 98151718 98765358 99543283 100726913 100874067 101504727 105048846 105206577 106457547 106613073 107279613 108183782 108860142 109019178 110481121 112830242 112995078 114338658 115053498 115221582 115226251 118244637 123756514 125228054 126010974 126195066 127003499 127189041 127984221 129506031 129695229 130797366 134229081 134425179 135265599 136873989 139093434 139302283 144166134 145067454 145279386 147006846 147012803 147227577 148148037 157896242 158883402 159115518 161007498 162275673 163290213 163528767 166879398 168168042 169245363 169492617 171507987 172580247 175642009 177730499 183936102 184204818 185356458 185363969 185634771 187842081 189016461 189292599 196196049 199086566 201453826 201748134 203009454 203314273 208640151 210413154 212915094 213226146 214559226 216249201 217601181 220962242 224094977 230452502 235372823 236489274 236844363 238325103 238673277 241511247 250319097 254006998 254378082 255968442 259012062 259390458 259400969 268458162 268850358 270531198 273747978 275904153 276307227 278604566 285914281 294025606 294455154 296296074 296774429 298629849 302180739 302622201 304514181 315619731 319372641 319839219 324551346 326580426 327057534 327070787 330959857 331443363 338490726 338985234 343015974 343531013 345160494 345678753 351284018 355460998 370727938 371269542 375684162 378032922 378585198 378643237 381010497 381567123 383952663 388518093 392392098 402687243 403275537 406628546 417280302 417297211 417906849 432498402 433147799 435202362 438298189 441038409 441682731 444444111 448189954 470745646 473688726 476650206 477346554 483022494 486827019 489870639 500638194 507736089 508477851 514523961 518801938 526157353 526926027 533191497 551808306 552614454 552636847 556091907 556904313 563526243 567049383 571828562 588588147 593548858 597259698 604361478 605244402 609028362 609053041 609942819 631239462 638745282 639678438 648747603 654141574 661919714 662886726 672284931 687062026 691357506 696802981 705088391 706118469 710533089 714975309 750957291 757286474 762020994 763134246 767905326 773367847 777036186 778202907 805374486 806551074 806583757 827712459 834594422 835813698 857742843 866295598 876596378 882076818 883365462 888888222 889024493 890323287 895889547 906542217 907866603 946859193 958117923 973654038 975115981 979741278 981212361 992879571 994330089 1015472178 1016955702 1029047922 1029089621 1030593039 1037036259 1052314706 1053852054 1066382994 1105273694 1112183814 1113808626 1127052486 1134098766 1135929711 1143031491 1144701369 1177176294 1208061729 1218106082 1219885638 1229494063 1244113493 1251891633 1253720547 1297495206 1297547783 1299443397 1314894567 1323115227 1325048193 1344569862 1393605962 1410176782 1412236938 1421066178 1423199911 1429950618 1460481057 1501914582 1523208267 1546735694 1556405814 1568664839 1578472059 1580778081 1599574491 1613167514 1655424918 1657910541 1668275721 1670712939 1690578729 1715485686 1778048986 1780646574 1791779094 1813084434 1815733206 1815806783 1827159123 1829828457 1893718386 1916235846 1950231962 1962424722 1985759142 1988660178 2001399967 2016854793 2058179242 2061186078 2074072518 2090408943 2115265173 2118355407 2131599267 2271859422 2286062982 2289402738 2289495509 2316718999 2320103541 2334608721 2416123458 2419751271 2458988126 2488226986 2503783266 2507441094 2573228529 2595095566 2598886794 2629789134 2646230454 2650096386 2667073479 2670969861 2687668641 2719626651 2846399822 2920962114 2921080477 2925347943 2943637083 2978638713 2982990267 3046416534 3087268863 3091779117 3111108777 3137329678 3156944118 3161556162 3199148982 3203952509 3315821082 3336551442 3341425878 3381157458 3407789133 3429094473 3631613566 3654318246 3659656914 3683101471 3688482189 3732340479 3755674899 3761161641 3892643349 3898330191 3944683701 3969345681 4002799934 4033709586 4039766207 4087801477 4180817886 4230530346 4236710814 4263198534 4263371287 4269599733 4578991018 4633437998 4640207082 4669217442 4705994517 4735416177 4742334243 4798723473 4839502542 4973731623 5004827163 5146457058 5154184471 5334146958 5341939722 5375337282 5413574929 5439253302 5447420349 5481477369 5489485371 5842160954 5850695886 5887274166 5957277426 5965980534 6004199901 6050564379 6174537726 6183558234 6222217554 6271226829 6345795519 6355066221 6407905018 6498754333 6576028463 6815578266 6825811867 6858188946 6868486527 6950156997 6960310623 7003826163 7259253813 7366202942 7376964378 7464680958 7511349798 7522323282 7522628101 7719685587 7785286698 7796660382 7889367402 7938691362 8001220437 8012909583 8079532414 8175602954 8291514149 8526742574 8539199466 8606458441 8708794451 8763241431 8776043829 8830911249 8935916139 9261806589 9275337351 9411989034 9470832354 9484668486 9597446946 9597835853 9611857527 9947463246 9962399377 10009654326 10223367399 10308368942 10827149858 10894840698 10962954738 10978970742 10980653873 11049304413 11065446567 11197021437 11267024697 11677930047 11694990573 11834051103 12008399802 12101128758 12101619119 12119298621 12263404431 12542453658 12691591038 12710132442 12710647481 12790113861 12808799199 12997508666 13152056926 13651623734 13736973054 13900313994 13920621246 14007652326 14009799769 14117983551 14206248531 14518507626 14921194869 15045256202 15439371174 15462553413 16002440874 16025819166 16026468563 16217032993 16240724787 16342261047 16444432107 16583028298 17212916882 17417588902 17526482862 17552087658 17661822498 17871832278 18012599703 18523613178 18550674702 18813680487 19037386557 19195671706 19223715054 19496262999 19728085389 19924798754 20446734798 20447563339 20477435601 20605459581 20850470991 20880931869 21777761439 21961307746 22098608826 22130893134 22394042874 22427667563 22534049394 22567884303 23355860094 23389981146 23668102206 24003661311 24203238238 24238597242 24526808862 24874542447 25421294962 25580227722 25617598398 25781710297 25819375323 26126383353 26289724293 26328131487 27785419767 28019599538 28235967102 28278363449 28412497062 28614610339 28793507559 28835572581 29842389738 29843599009 29887198131 30925106826 32052937126 32434065986 32481449574 32684522094 32888864214 32941961619 33147913239 33196339701 33591064311 35033790141 36025199406 36079291297 36304857357 36357895863 36790213293 37627360974 38074773114 38131942443 38370341583 38426397597 38992525998 39456170778 40895126678 40954871202 41210919162 41700941982 41761863738 42029399307 42353950653 43555522878 44855335126 45135768606 45491280331 46032199241 46387660239 48007322622 48079405689 48651098979 48722174361 49026783141 49749084894 51563420594 51638750646 52252766706 52579448586 52656262974 52658396707 54037799109 55570839534 56556726898 57229220678 57587015118 57671145162 58040599043 58488788997 59184256167 59687198018 59774396262 61342690017 61432306803 61816378743 62551412973 65883923238 66295826478 66392679402 67182128622 67184850971 67283002689 67703652909 70067580282 72158582594 72609714714 72715791726 73580426586 74623627341 76263884886 76740683166 76852795194 77345130891 77458125969 78379150059 78869172879 84058798614 84707901306 84711333833 84835090347 85843831017 86380522677 86506717743 89530797027 89661594393 90982560662 92064398482 92775320478 92914622761 96158811378 97302197958 97444348722 98053566282 98825884857 99443739717 105316793414 108075598218 108237873891 108914572071 109073687589 110370639879 114395827329 115111024749 116081198086 116977577994 118368512334 118546242833 122685380034 122864613606 123632757486 125102825946 126088197921 134369701942 134566005378 135407305818 136473840993 138096597723 139162980717 144238217067 145953296937 146166523083 149247254682 149471349659 151248654649 154690261782 154916251938 156758300118 156993672941 157738345758 157975190121 169422667666 169670180694 171687662034 172761045354 173013435486 174121797129 175466366991 177552768501 179061594054 179323188786 184028070051 184296920409 185829245522 190704825427 197651769714 197948544143 198887479434 200302272373 201554552913 201849008067 203110958727 216475747782 217829144142 218147375178 220741279758 223870882023 228791654658 230222049498 232035392673 232374377907 235137450177 237092485666 240453910321 252176395842 252555039079 254134001499 254505271041 257531493051 259141568031 268592391081 268984783179 272947681986 276193195446 278325961434 278337239737 278743868283 288476434134 291906593874 292333046166 296477654571 298942699318 302497309298 313987345882 315950380242 318438962317 322225394687 324713621673 326743716213 343187481987 348243594258 350932733982 355105537002 355638728499 368056140102 368593840818 368608776949 378264593763 381409650854 395897088286 400604544746 403109105826 403698016134 406221917454 406284193301 409421522979 414289793169 432714651201 437859890811 447741764046 448414048977 453745963947 464070785346 464748755814 470274900354 470293956797 470981018823 473925570363 480907820642 505110078158 508268002998 509010542082 515062986102 518283136062 522365391387 537184782162 537969566358 552084210153 556674479474 557487736566 572114476281 592955309142 592979336831 593845632429 600906817119 604663658739 605547024201 636877924634 644450789374 649427243346 650402359327 653487432426 686374963974 696106178019 711277456998 721361730963 737217553898 756529187526 757665117237 762402004497 763515813123 772594479153 805777173243 812568386602 818843045958 828579586338 829823699831 835011719211 836231604849 865429302402 875719781622 896828097954 907491927894 940587913594 941962037646 947851140726 955316886951 966676184061 974140865019 1044730782774 1046299447613 1058740582543 1066916185497 1104168420306 1105826330847 1144228952562 1185958673662 1187691264858 1201813634238 1209327317478 1211094048402 1218852579903 1228264568937 1242869379507 1300804718654 1334933777989 1345242146931 1361237891841 1392212356038 1410881870391 1412943056469 1421776711089 1442723461926 1515330234474 1524804008994 1527031626246 1545188958306 1567096174161 1611554346486 1659647399662 1670023438422 1672463209698 1683177372247 1716343428843 1778938010493 1781536897287 1802720451357 1813990976217 1910633773902 1933352368122 1948281730038 1948360678159 1951207077981 2092598895226 2117481165086 2133832370994 2164085192889 2211652661694 2272995351711 2287206013491 2437705159806 2456529137874 2485738759014 2489471099493 2505035157633 2508694814547 2669867555978 2690484293862 2722475783682 2821763740782 2825886112938 2843553422178 2865950660853 2900028552183 3134192348322 3138898342839 3176221747629 3200748556491 3317478992541 3366354744494 3432686857686 3437841042157 3557876020986 3563073794574 3605440902714 3627981952434 3656557739709 3896721356318 3902414155962 4004801333967 4035726440793 4083713675523 4232645611173 4238829169407 4328170385778 4386210984821 4545990703422 4552816515289 4574412026982 4978942198986 5010070315266 5017389629094 5049532116741 5149030286529 5336814031479 5344610691861 5408161354071 5530439937383 5731901321706 5800057104366 5808765898817 5845082034477 5853621233943 6277796685678 6352443495258 6401497112982 6492255578667 6634957985082 6818986055133 6875682084314 7313115479418 7324096133291 7411184077801 7468413298479 7515105472899 8009602667934 8071452881586 8167427351046 8465291222346 8477658338814 8597851982559 8700085656549 8772421969642 9105633030578 9344536445923 9416695028517 9528665242887 9952436977623 10099064233482 10298060573058 10313523126471 10673628062958 10689221383722 10816322708142 10969673219127 11060879874766 11617531797634 11690164068954 11707242467886 11782241605729 12014404001901 12697936833519 12984511157334 13158632954463 13637972110266 13638524747113 13658449545867 14648192266582 14822368155602 14936826596958 15030210945798 15148596350223 16010442094437 16591319812149 17195703965118 17400171313098 17426297696451 17535246103431 17560863701829 18689072891846 18833390057034 19057330485774 19904873955246 20627046252942 21939346438254 21972288399873 22233552233403 22405239895437 23564483211458 24028808003802 24064887295099 25395873667038 26317265908926 27277049494226 27316899091734 28033609337769 28250085085551 28585995728661 30297192700446 30703476893747 30940569379413 32020884188874 33182639624298 34852595392902 35070492206862 35121727403658 35346724817187 36043212005703 38713079561681 39475898863389 40915574241339 40975348637601 43944576799746 44467104466806 44810479790874 45445789050669 48129774590198 49773959436447 52278893089353 52605738310293 56067218675538 56500170171102 57171991457322 61406953787494 61881138758826 65916865199619 66700656700209 70693449634374 72086424011406 72194661885297 77426159123362 78951797726778 81831148482678 81950697275202 84100828013307 90891578101338 92110430681241 92821708138239 99547918872894 104557786178706 105211476620586 106040174451561 116139238685043 118427696590167 122746722724017 122926045912803 127200118559809 131833730399238 133401313400418 144389323770594 149321878309341 156836679268059 168201656026614 168454211065693 184220861362482 185643416276478 197750595598857 200101970100627 212080348903122 214924338256229 216583985655891 232278477370086 236855393180334 245493445448034 245852091825606 252302484039921 254400237119618 270991556931767 276331292043723 298643756618682 313673358536118 318120523354683 336908422131386 348417716055129 368240168172051 381600355679427 395501191197714 400203940201254 429848676512458 433167971311782 504604968079842 505362633197079 541983113863534 552662584087446 636241046709366 644773014768687 649751956967673 696835432110258 736480336344102 763200711358854 812974670795301 828993876131169 890400829918663 1010725266394158 1045253148165387 1144801067038281 1289546029537374 1299503913935346 1516087899591237 1625949341590602 1657987752262338 1780801659837326 1934319044306061 2090506296330774 2289602134076562 2438924012385903 2671202489755989 3032175799182474 3434403201114843 3868638088612122 4548263698773711 4877848024771806 5342404979511978 5802957132918183 6232805809430641 6868806402229686 7316772037157709 8013607469267967 9096527397547422 11605914265836366 12465611618861282 14633544074315418 16027214938535934 18698417428291923 24040822407803901 37396834856583846 48081644815607802 56095252284875769 112190504569751538 168285756854627307 336571513709254614
- Sum of all divisors σ(n): 970235673042079080
- Sum of proper divisors (its aliquot sum) s(n): 633664159332824466
- 336571513709254614 is an abundant number, because the sum of its proper divisors (633664159332824466) is greater than itself. Its abundance is 297092645623569852
Bases of 336571513709254614
- Binary: 100101010111011111000000010001011000010011111010111110101102
- Hexadecimal: 0x4ABBE022C27D7D6
- Base-36: 2K20N6UZIY1I
Squares and roots of 336571513709254614
- 336571513709254614 squared (3365715137092546142) is 113280383840538966575464071480288996
- 336571513709254614 cubed (3365715137092546143) is 38126950262775585630353673505700688949591728466427544
-
The
square root of 336571513709254614 is 580147837.8045156637 -
The
cube root of 336571513709254614 is 695599.2717526763
Scales and comparisons
How big is 336571513709254614?- 336,571,513,709,254,614 seconds is equal to 10,701,933,051 years, 47 weeks, 1 day, 3 hours, 36 minutes, 54 seconds.
-
To count from 1 to 336,571,513,709,254,614 would take you about thirty-two billion, one hundred five million, seven hundred ninety-nine thousand, one hundred fifty-five years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 336571513709254614 cubic inches would be around 57966.6 feet tall.
Recreational maths with 336571513709254614
- 336571513709254614 backwards is 416452907315175633
- The number of decimal digits it has is: 18
- The sum of 336571513709254614's digits is 72
- More coming soon!
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 336571513709254614 - Facts about the integer". Numbermatics.com. 2024. Web. 3 June 2024.
APA style:
Numbermatics. (2024). Number 336571513709254614 - Facts about the integer. Retrieved 3 June 2024, from https://numbermatics.com/n/336571513709254614/
Chicago style:
Numbermatics. 2024. "Number 336571513709254614 - Facts about the integer". https://numbermatics.com/n/336571513709254614/
The information we have on file for 336571513709254614 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
Keywords: Divisors of 336571513709254614, math, Factors of 336571513709254614, curriculum, school, college, exams, university, Prime factorization of 336571513709254614, STEM, science, technology, engineering, physics, economics, calculator, three hundred thirty-six quadrillion, five hundred seventy-one trillion, five hundred thirteen billion, seven hundred nine million, two hundred fifty-four thousand, six hundred fourteen.