4397683983593472
4,397,683,983,593,472 is an even composite number composed of six prime numbers multiplied together.
What does the number 4397683983593472 look like?
This visualization shows the relationship between its 6 prime factors (large circles) and 2080 divisors.
4397683983593472 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two thousand and eighty divisors.
Prime factorization of 4397683983593472:
212 × 33 × 11 × 134 × 47 × 2693
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 11 × 13 × 13 × 13 × 13 × 47 × 2693)See below for interesting mathematical facts about the number 4397683983593472 from the Numbermatics database.
Names of 4397683983593472
- Cardinal: 4397683983593472 can be written as Four quadrillion, three hundred ninety-seven trillion, six hundred eighty-three billion, nine hundred eighty-three million, five hundred ninety-three thousand, four hundred seventy-two.
Scientific notation
- Scientific notation: 4.397683983593472 × 1015
Factors of 4397683983593472
Divisors of 4397683983593472
- Number of divisors d(n): 2080
-
Complete list of divisors:
1 2 3 4 6 8 9 11 12 13 16 18 22 24 26 27 32 33 36 39 44 47 48 52 54 64 66 72 78 88 94 96 99 104 108 117 128 132 141 143 144 156 169 176 188 192 198 208 216 234 256 264 282 286 288 297 312 338 351 352 376 384 396 416 423 429 432 468 507 512 517 528 564 572 576 594 611 624 676 702 704 752 768 792 832 846 858 864 936 1014 1024 1034 1056 1128 1144 1152 1188 1222 1248 1269 1287 1352 1404 1408 1504 1521 1536 1551 1584 1664 1692 1716 1728 1833 1859 1872 2028 2048 2068 2112 2197 2256 2288 2304 2376 2444 2496 2538 2574 2693 2704 2808 2816 3008 3042 3072 3102 3168 3328 3384 3432 3456 3666 3718 3744 3861 4056 4096 4136 4224 4394 4512 4563 4576 4608 4653 4752 4888 4992 5076 5148 5386 5408 5499 5577 5616 5632 6016 6084 6144 6204 6336 6591 6656 6721 6768 6864 6912 7332 7436 7488 7722 7943 8079 8112 8272 8448 8788 9024 9126 9152 9216 9306 9504 9776 9984 10152 10296 10772 10816 10998 11154 11232 11264 12032 12168 12288 12408 12672 13182 13312 13442 13536 13728 13824 13959 14664 14872 14976 15444 15886 16158 16224 16497 16544 16731 16896 17576 18048 18252 18304 18432 18612 19008 19552 19773 19968 20163 20304 20592 21544 21632 21996 22308 22464 22528 23829 24064 24167 24237 24336 24816 25344 26364 26624 26884 27072 27456 27648 27918 28561 29328 29623 29744 29952 30888 31772 32316 32448 32994 33088 33462 33792 35009 35152 36096 36504 36608 36864 37224 38016 39104 39546 39936 40326 40608 41184 43088 43264 43992 44616 44928 45056 47658 48128 48334 48474 48672 49632 50193 50688 52728 53248 53768 54144 54912 55296 55836 57122 58656 59246 59319 59488 59904 60489 61776 63544 64632 64896 65988 66176 66924 67584 70018 70304 71487 72192 72501 72711 73008 73216 74448 76032 78208 79092 79872 80652 81216 82368 85683 86176 86528 87373 87984 88869 89232 89856 95316 96256 96668 96948 97344 99264 100386 101376 103259 105027 105456 107536 108288 109824 110592 111672 114244 117312 118492 118638 118976 119808 120978 123552 126571 127088 129264 129792 131976 132352 133848 135168 140036 140608 142974 144384 145002 145422 146016 146432 148896 152064 156416 158184 159744 161304 162432 164736 171366 172352 173056 174746 175968 177738 178464 179712 181467 190632 192512 193336 193896 194688 198528 200772 202752 206518 210054 210912 214461 215072 216576 217503 219648 223344 228488 234624 236984 237276 237952 239616 241956 247104 253142 254176 257049 258528 259584 262119 263952 264704 266607 267696 280072 281216 285948 288768 290004 290844 292032 292864 297792 304128 309777 312832 314171 315081 316368 322608 324864 329472 342732 344704 346112 349492 351936 355476 356928 359424 362934 379713 381264 385099 386672 387792 389376 397056 401544 405504 413036 420108 421824 428922 430144 433152 435006 439296 446688 455117 456976 469248 473968 474552 475904 479232 483912 494208 506284 508352 514098 517056 519168 524238 527904 529408 533214 535392 560144 562432 571896 577536 580008 581688 584064 585728 595584 608256 619554 625664 628342 630162 632736 645216 649728 652509 658944 685464 689408 692224 698984 703872 710952 713856 718848 725868 759426 762528 770198 771147 773344 775584 778752 786357 794112 799821 803088 826072 840216 843648 857844 860288 866304 870012 878592 893376 910234 913952 929331 938496 942513 945243 947936 949104 951808 967824 988416 1012568 1016704 1028196 1034112 1038336 1048476 1055808 1058816 1066428 1070784 1120288 1124864 1135849 1139139 1143792 1155297 1160016 1163376 1168128 1191168 1216512 1239108 1251328 1256684 1260324 1265472 1290432 1299456 1305018 1317888 1342367 1365351 1370928 1378816 1392281 1397968 1407744 1421904 1427712 1437696 1451736 1518852 1525056 1540396 1542294 1546688 1551168 1557504 1572714 1588224 1599642 1606176 1645423 1652144 1680432 1687296 1715688 1720576 1732608 1740024 1757184 1786752 1820468 1827904 1858662 1876992 1885026 1890486 1895872 1898208 1903616 1935648 1976832 2025136 2033408 2056392 2068224 2076672 2096952 2111616 2117632 2132856 2141568 2240576 2249728 2271698 2278278 2287584 2310594 2320032 2326752 2336256 2359071 2382336 2478216 2502656 2513368 2520648 2530944 2580864 2598912 2610036 2635776 2684734 2730702 2741856 2757632 2784562 2787993 2795936 2815488 2827539 2843808 2855424 2903472 3037704 3050112 3080792 3084588 3093376 3102336 3115008 3145428 3176448 3199284 3212352 3290846 3304288 3360864 3374592 3407547 3417417 3431376 3441152 3465891 3480048 3573504 3640936 3655808 3717324 3753984 3770052 3780972 3791744 3796416 3807232 3871296 3953664 4027101 4050272 4066816 4096053 4112784 4136448 4176843 4193904 4223232 4265712 4283136 4481152 4499456 4543396 4556556 4575168 4621188 4640064 4653504 4672512 4718142 4764672 4936269 4956432 5006287 5026736 5041296 5061888 5161728 5197824 5220072 5271552 5369468 5461404 5483712 5515264 5569124 5575986 5591872 5630976 5655078 5687616 5710848 5806944 5916521 6075408 6100224 6161584 6169176 6186752 6204672 6230016 6290856 6352896 6398568 6424704 6581692 6608576 6721728 6749184 6815094 6834834 6862752 6882304 6931782 6960096 7147008 7281872 7311616 7434648 7507968 7540104 7561944 7583488 7592832 7614464 7742592 7907328 8054202 8100544 8133632 8192106 8225568 8272896 8353686 8387808 8446464 8482617 8531424 8566272 8962304 8998912 9086792 9113112 9150336 9242376 9280128 9307008 9345024 9436284 9529344 9872538 9912864 10012574 10053472 10082592 10123776 10222641 10323456 10397673 10440144 10738936 10922808 10967424 11030528 11138248 11151972 11183744 11261952 11310156 11375232 11421696 11613888 11833042 12081303 12150816 12200448 12288159 12323168 12338352 12373504 12409344 12530529 12581712 12797136 12849408 13163384 13217152 13443456 13498368 13630188 13669668 13725504 13764608 13863564 13920192 14294016 14563744 14623232 14766037 14808807 14869296 15018861 15080208 15123888 15166976 15185664 15485184 15814656 16108404 16201088 16267264 16384212 16451136 16545792 16707372 16775616 16892928 16965234 17062848 17132544 17749563 17924608 18099653 18173584 18226224 18300672 18484752 18560256 18614016 18690048 18872568 19058688 19745076 19825728 20025148 20106944 20165184 20247552 20445282 20646912 20795346 20880288 21390499 21477872 21845616 21934848 22276496 22303944 22367488 22523904 22620312 22750464 22843392 23227776 23666084 24162606 24301632 24400896 24576318 24646336 24676704 24747008 24818688 25061058 25163424 25594272 25698816 26326768 26434304 26886912 26996736 27260376 27339336 27451008 27529216 27727128 27840384 28588032 29127488 29246464 29532074 29617614 29738592 30037722 30160416 30247776 30333952 30371328 30667923 30970368 32216808 32402176 32534528 32768424 32902272 33091584 33414744 33551232 33785856 33930468 34125696 34265088 35499126 35849216 36199306 36243909 36347168 36452448 36601344 36969504 37120512 37228032 37591587 37745136 39490152 39651456 40050296 40213888 40330368 40495104 40890564 41293824 41590692 41760576 42780998 42955744 43691232 43869696 44298111 44426421 44552992 44607888 44734976 45056583 45240624 45500928 46455552 47332168 48325212 48603264 48801792 49152636 49292672 49353408 49494016 49637376 50122116 50326848 51188544 51397632 52653536 52868608 53248689 53773824 54298959 54520752 54678672 54902016 55454256 55680768 57176064 58254976 58492928 59064148 59235228 59477184 60075444 60320832 60495552 60667904 60742656 61335846 61940736 64171497 64433616 64804352 65081731 65536848 65804544 66829488 67102464 67571712 67860936 68251392 68530176 70998252 71698432 72398612 72487818 72694336 72904896 73202688 73939008 74241024 74456064 75183174 75490272 76914773 78980304 79302912 80100592 80427776 80660736 80990208 81781128 82587648 83181384 83521152 85561996 85911488 87382464 87739392 88596222 88852842 89105984 89215776 89469952 90113166 90481248 91001856 92911104 94664336 96650424 97206528 97603584 98305272 98585344 98706816 98988032 99274752 100244232 100653696 102377088 102795264 105307072 105737216 106497378 107547648 108597918 109041504 109357344 109804032 110908512 111361536 116509952 116985856 118128296 118470456 118954368 120150888 120641664 120991104 121335808 121485312 122671692 123881472 128342994 128867232 129608704 130163462 131073696 131609088 132894333 133658976 134204928 135169749 135721872 136502784 141996504 143396864 144797224 144975636 145388672 145809792 146405376 147878016 148482048 148912128 150366348 150980544 153829546 157960608 158605824 159746067 160201184 160855552 161321472 162896877 163562256 166362768 167042304 171123992 171822976 174764928 175478784 177192444 177705684 178211968 178431552 178939904 180226332 180962496 182003712 185822208 189328672 192514491 193300848 194413056 195245193 196610544 197170688 197413632 200488464 201307392 204754176 205590528 210614144 211474432 212994756 215095296 217195836 218083008 218714688 219608064 221817024 222723072 230744319 233019904 235295489 236256592 236940912 237908736 240301776 241283328 241982208 242970624 245343384 247762944 256685988 257734464 259217408 260326924 262147392 263218176 265788666 267317952 268409856 270339498 271443744 273005568 278076487 283993008 289594448 289951272 290777344 291619584 292810752 295756032 296964096 297824256 300732696 301961088 307659092 315921216 317211648 319492134 320402368 321711104 322642944 325793754 327124512 332725536 334084608 342247984 343645952 349529856 350957568 354384888 355411368 356423936 356863104 357879808 360452664 361924992 364007424 371644416 378657344 385028982 386601696 388826112 390490386 393221088 394341376 394827264 398682999 400976928 402614784 409508352 421228288 422948864 425989512 430190592 434391672 436166016 437429376 439216128 443634048 445446144 461488638 466039808 470590978 472513184 473881824 475817472 480603552 482566656 483964416 488690631 490686768 513371976 515468928 518434816 520653848 524294784 526436352 531577332 534635904 536819712 540678996 542887488 546011136 556152974 567986016 577543473 579188896 579902544 581554688 583239168 585735579 591512064 601465392 603922176 615318184 631842432 634423296 638984268 640804736 643422208 645285888 651587508 654249024 665451072 668169216 684495968 687291904 692232957 699059712 705886467 708769776 710822736 712847872 713726208 720905328 723849984 743288832 757314688 770057964 773203392 777652224 780980772 786442176 788682752 789654528 797365998 801953856 805229568 819016704 834229461 842456576 846062503 851979024 868783344 872332032 874858752 878432256 887268096 890892288 922977276 932079616 941181956 945026368 947763648 951634944 961207104 965133312 967928832 977381262 981373536 1026743952 1030937856 1041307696 1048589568 1052872704 1063154664 1069271808 1073639424 1081357992 1085774976 1092022272 1112305948 1135972032 1155086946 1158377792 1159805088 1163109376 1166478336 1171471158 1183024128 1202930784 1207844352 1230636368 1263684864 1268846592 1277968536 1281609472 1286844416 1290571776 1303175016 1308498048 1330902144 1336338432 1368991936 1374583808 1384465914 1398119424 1411772934 1417539552 1421645472 1425695744 1427452416 1441810656 1447699968 1514629376 1540115928 1546406784 1555304448 1561961544 1572884352 1577365504 1579309056 1594731996 1603907712 1610459136 1638033408 1668458922 1684913152 1692125006 1703958048 1737566688 1744664064 1749717504 1757206737 1774536192 1845954552 1864159232 1882363912 1890052736 1895527296 1903269888 1922414208 1930266624 1935857664 1954762524 1962747072 2053487904 2061875712 2076698871 2082615392 2097179136 2117659401 2126309328 2138543616 2162715984 2171549952 2224611896 2271944064 2310173892 2316755584 2319610176 2326218752 2332956672 2342942316 2366048256 2405861568 2415688704 2461272736 2502688383 2527369728 2538187509 2555937072 2563218944 2606350032 2616996096 2661804288 2672676864 2737983872 2749167616 2768931828 2796238848 2823545868 2835079104 2843290944 2851391488 2854904832 2883621312 2895399936 3029258752 3058841357 3080231856 3092813568 3123923088 3145768704 3158618112 3189463992 3207815424 3220918272 3276066816 3336917844 3369826304 3384250012 3407916096 3475133376 3489328128 3499435008 3514413474 3549072384 3614994331 3691909104 3764727824 3780105472 3791054592 3806539776 3844828416 3860533248 3871715328 3909525048 3925494144 4106975808 4123751424 4153397742 4165230784 4194358272 4235318802 4252618656 4277087232 4325431968 4343099904 4449223792 4543888128 4620347784 4633511168 4639220352 4652437504 4665913344 4685884632 4732096512 4811723136 4831377408 4922545472 5005376766 5054739456 5076375018 5111874144 5126437888 5212700064 5233992192 5323608576 5475967744 5498335232 5537863656 5592477696 5647091736 5670158208 5686581888 5702782976 5709809664 5767242624 5790799872 6058517504 6117682714 6160463712 6185627136 6247846176 6291537408 6352978203 6378927984 6415630848 6673835688 6739652608 6768500024 6815832192 6950266752 6978656256 6998870016 7028826948 7098144768 7229988662 7383818208 7508065149 7529455648 7560210944 7582109184 7614562527 7689656832 7819050096 7850988288 8213951616 8247502848 8306795484 8330461568 8388716544 8470637604 8505237312 8554174464 8650863936 8686199808 8898447584 9087776256 9176524071 9240695568 9267022336 9278440704 9371769264 9623446272 9662754816 9845090944 10010753532 10109478912 10152750036 10223748288 10252875776 10425400128 10467984384 10647217152 10844982993 10951935488 11075727312 11294183472 11340316416 11373163776 11419619328 11534485248 11581599744 12117035008 12235365428 12320927424 12371254272 12495692352 12583074816 12705956406 12757855968 12831261696 13347671376 13537000048 13631664384 13900533504 13957312512 13997740032 14057653896 14196289536 14459977324 14767636416 15016130298 15058911296 15120421888 15164218368 15229125054 15379313664 15638100192 15701976576 16427903232 16495005696 16613590968 16660923136 16777433088 16941275208 17010474624 17108348928 17301727872 17372399616 17796895168 18175552512 18353048142 18481391136 18534044672 18556881408 18743538528 19246892544 19690181888 20021507064 20218957824 20305500072 20447496576 20505751552 20850800256 20935968768 21294434304 21689965986 21903870976 22151454624 22588366944 22680632832 22746327552 22843687581 23068970496 24234070016 24470730856 24641854848 24742508544 24991384704 25166149632 25411912812 25515711936 25662523392 26695342752 27074000096 27263328768 27529572213 27801067008 28115307792 28919954648 29535272832 30032260596 30117822592 30240843776 30328436736 30458250108 30758627328 31276200384 31403953152 32534948979 32855806464 33227181936 33321846272 33882550416 34020949248 34603455744 34744799232 35593790336 36351105024 36706096284 36962782272 37068089344 37113762816 37487077056 38493785088 39380363776 39764937641 40043014128 40611000144 40894993152 41701600512 41871937536 42588868608 43379931972 43807741952 44302909248 45176733888 45361265664 45492655104 45687375162 46137940992 48941461712 49283709696 49485017088 49982769408 50332299264 50823825624 51031423872 51325046784 53390685504 54148000192 54526657536 55059144426 55602134016 56230615584 57839909296 59070545664 60064521192 60235645184 60481687552 60656873472 60916500216 61517254656 62552400768 62807906304 65069897958 65711612928 66454363872 66643692544 67765100832 68041898496 69206911488 71187580672 72702210048 73412192568 73925564544 74136178688 74227525632 74974154112 76987570176 78760727552 79529875282 80086028256 81222000288 81789986304 82588716639 83403201024 86759863944 87615483904 88605818496 90353467776 90722531328 90985310208 91374750324 92275881984 97604846937 97882923424 98567419392 99965538816 101647651248 102062847744 106781371008 108296000384 109053315072 110118288852 111204268032 112461231168 115679818592 118141091328 119294812923 120129042384 120471290368 121833000432 125104801536 125615812608 130139795916 131423225856 132908727744 133287385088 135530201664 136083796992 138413822976 142375161344 146824385136 147851129088 148455051264 149948308224 153975140352 157521455104 159059750564 160172056512 162444000576 163579972608 165177433278 166806402048 173519727888 177211636992 180706935552 181445062656 181970620416 182749500648 184551763968 195209693874 195765846848 197134838784 199931077632 203295302496 204125695488 213562742016 216592000768 218106630144 220236577704 222408536064 224922462336 231359637184 236282182656 238589625846 240258084768 240942580736 243666000864 250209603072 260279591832 262846451712 265817455488 266574770176 271060403328 272167593984 276827645952 284750322688 293648770272 295702258176 299896616448 315042910208 318119501128 320344113024 324888001152 327159945216 330354866556 333612804096 347039455776 354423273984 357884438769 361413871104 365499001296 390419387748 391531693696 394269677568 399862155264 406590604992 408251390976 427125484032 433184001536 440473155408 449844924672 462719274368 472564365312 477179251692 480516169536 481885161472 487332001728 500419206144 520559183664 531634910976 542120806656 544335187968 553655291904 569500645376 587297540544 591404516352 599793232896 636239002256 640688226048 649776002304 654319890432 660709733112 667225608192 694078911552 708846547968 715768877538 722827742208 730998002592 780838775496 783063387392 788539355136 799724310528 813181209984 816502781952 854250968064 866368003072 880946310816 899689849344 925438548736 945128730624 954358503384 961032339072 963770322944 974664003456 1000838412288 1041118367328 1063269821952 1073653316307 1084241613312 1139001290752 1174595081088 1182809032704 1199586465792 1272478004512 1281376452096 1299552004608 1321419466224 1388157823104 1417693095936 1431537755076 1445655484416 1461996005184 1561677550992 1566126774784 1626362419968 1633005563904 1708501936128 1732736006144 1761892621632 1799379698688 1850877097472 1908717006768 1922064678144 1949328006912 2001676824576 2082236734656 2126539643904 2147306632614 2168483226624 2349190162176 2365618065408 2399172931584 2544956009024 2562752904192 2599104009216 2642838932448 2776315646208 2835386191872 2863075510152 2891310968832 2923992010368 3123355101984 3132253549568 3252724839936 3417003872256 3465472012288 3523785243264 3598759397376 3701754194944 3817434013536 3844129356288 3898656013824 4164473469312 4253079287808 4294613265228 4336966453248 4698380324352 5089912018048 5125505808384 5198208018432 5285677864896 5552631292416 5726151020304 5847984020736 6246710203968 6264507099136 6505449679872 7047570486528 7197518794752 7403508389888 7634868027072 7688258712576 7797312027648 8328946938624 8506158575616 8589226530456 8673932906496 9396760648704 10179824036096 10251011616768 10396416036864 10571355729792 11105262584832 11452302040608 11695968041472 12493420407936 12529014198272 13010899359744 14095140973056 14807016779776 15269736054144 15376517425152 15594624055296 16657893877248 17178453060912 18793521297408 20359648072192 21142711459584 22210525169664 22904604081216 23391936082944 24986840815872 26021798719488 28190281946112 30539472108288 30753034850304 31189248110592 33315787754496 34356906121824 37587042594816 40719296144384 42285422919168 44421050339328 45809208162432 46783872165888 49973681631744 56380563892224 61078944216576 66631575508992 68713812243648 81438592288768 84570845838336 91618416324864 93567744331776 99947363263488 112761127784448 122157888433152 133263151017984 137427624487296 162877184577536 169141691676672 183236832649728 199894726526976 244315776866304 274855248974592 338283383353344 366473665299456 399789453053952 488631553732608 549710497949184 732947330598912 1099420995898368 1465894661197824 2198841991796736 4397683983593472
- Sum of all divisors σ(n): 15730819138114560
- Sum of proper divisors (its aliquot sum) s(n): 11333135154521088
- 4397683983593472 is an abundant number, because the sum of its proper divisors (11333135154521088) is greater than itself. Its abundance is 6935451170927616
Bases of 4397683983593472
- Binary: 11111001111110101011100101111010110100110000000000002
- Hexadecimal: 0xF9FAB97AD3000
- Base-36: 17AUK4QZUO0
Squares and roots of 4397683983593472
- 4397683983593472 squared (43976839835934722) is 19339624419554548906870161014784
- 4397683983593472 cubed (43976839835934723) is 85049556558588237306054943004204671202437890048
-
The
square root of 4397683983593472 is 66315035.8787015361 -
The
cube root of 4397683983593472 is 163835.4981422433
Scales and comparisons
How big is 4397683983593472?- 4,397,683,983,593,472 seconds is equal to 139,832,747 years, 38 weeks, 6 days, 11 hours, 31 minutes, 12 seconds.
-
To count from 1 to 4,397,683,983,593,472 would take you about four hundred nineteen million, four hundred ninety-eight thousand, two hundred forty-three 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 4397683983593472 cubic inches would be around 13653 feet tall.
Recreational maths with 4397683983593472
- 4397683983593472 backwards is 2743953893867934
- The number of decimal digits it has is: 16
- The sum of 4397683983593472's digits is 90
- 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 4397683983593472 - Facts about the integer". Numbermatics.com. 2024. Web. 21 June 2024.
APA style:
Numbermatics. (2024). Number 4397683983593472 - Facts about the integer. Retrieved 21 June 2024, from https://numbermatics.com/n/4397683983593472/
Chicago style:
Numbermatics. 2024. "Number 4397683983593472 - Facts about the integer". https://numbermatics.com/n/4397683983593472/
The information we have on file for 4397683983593472 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 4397683983593472, math, Factors of 4397683983593472, curriculum, school, college, exams, university, Prime factorization of 4397683983593472, STEM, science, technology, engineering, physics, economics, calculator, four quadrillion, three hundred ninety-seven trillion, six hundred eighty-three billion, nine hundred eighty-three million, five hundred ninety-three thousand, four hundred seventy-two.