746831265546240
746,831,265,546,240 is an even composite number composed of seven prime numbers multiplied together.
What does the number 746831265546240 look like?
This visualization shows the relationship between its 7 prime factors (large circles) and 2160 divisors.
746831265546240 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two thousand, one hundred sixty divisors.
Prime factorization of 746831265546240:
214 × 32 × 5 × 7 × 19 × 41 × 4312
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 19 × 41 × 431 × 431)See below for interesting mathematical facts about the number 746831265546240 from the Numbermatics database.
Names of 746831265546240
- Cardinal: 746831265546240 can be written as Seven hundred forty-six trillion, eight hundred thirty-one billion, two hundred sixty-five million, five hundred forty-six thousand, two hundred forty.
Scientific notation
- Scientific notation: 7.4683126554624 × 1014
Factors of 746831265546240
Divisors of 746831265546240
- Number of divisors d(n): 2160
-
Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 19 20 21 24 28 30 32 35 36 38 40 41 42 45 48 56 57 60 63 64 70 72 76 80 82 84 90 95 96 105 112 114 120 123 126 128 133 140 144 152 160 164 168 171 180 190 192 205 210 224 228 240 246 252 256 266 280 285 287 288 304 315 320 328 336 342 360 369 380 384 399 410 420 431 448 456 480 492 504 512 532 560 570 574 576 608 615 630 640 656 665 672 684 720 738 760 768 779 798 820 840 855 861 862 896 912 960 984 1008 1024 1064 1120 1140 1148 1152 1197 1216 1230 1260 1280 1293 1312 1330 1344 1368 1435 1440 1476 1520 1536 1558 1596 1640 1680 1710 1722 1724 1792 1824 1845 1920 1968 1995 2016 2048 2128 2155 2240 2280 2296 2304 2337 2394 2432 2460 2520 2560 2583 2586 2624 2660 2688 2736 2870 2880 2952 3017 3040 3072 3116 3192 3280 3360 3420 3444 3448 3584 3648 3690 3840 3879 3895 3936 3990 4032 4096 4256 4305 4310 4480 4560 4592 4608 4674 4788 4864 4920 5040 5120 5166 5172 5248 5320 5376 5453 5472 5740 5760 5904 5985 6034 6080 6144 6232 6384 6465 6560 6720 6840 6888 6896 7011 7168 7296 7380 7680 7758 7790 7872 7980 8064 8189 8192 8512 8610 8620 8960 9051 9120 9184 9216 9348 9576 9728 9840 10080 10240 10332 10344 10496 10640 10752 10906 10944 11480 11520 11685 11808 11970 12068 12160 12288 12464 12768 12915 12930 13120 13440 13680 13776 13792 14022 14336 14592 14760 15085 15360 15516 15580 15744 15960 16128 16359 16378 16384 17024 17220 17240 17671 17920 18102 18240 18368 18432 18696 19152 19395 19456 19680 20160 20480 20664 20688 20992 21280 21504 21812 21888 22960 23040 23370 23616 23940 24136 24320 24567 24576 24928 25536 25830 25860 26240 26880 27153 27265 27360 27552 27584 28044 28672 29184 29520 30170 30720 31032 31160 31488 31920 32256 32718 32756 34048 34440 34480 35055 35342 35840 36204 36480 36736 36864 37392 38304 38790 38912 39360 40320 40945 40960 41328 41376 41984 42560 43008 43624 43776 45255 45920 46080 46740 47232 47880 48272 48640 49077 49134 49152 49856 51072 51660 51720 52480 53013 53760 54306 54530 54720 55104 55168 56088 57323 57344 58368 59040 60340 61440 62064 62320 62976 63840 64512 65436 65512 68096 68880 68960 70110 70684 71680 72408 72960 73472 73701 73728 74784 76608 77580 77824 78720 80640 81795 81890 81920 82656 82752 83968 85120 86016 87248 87552 88355 90510 91840 92160 93480 94464 95760 96544 97280 98154 98268 99712 102144 103320 103440 104960 106026 107520 108612 109060 109440 110208 110336 112176 114646 114688 116736 118080 120680 122835 122880 123697 124128 124640 125952 127680 129024 130872 131024 135765 136192 137760 137920 140220 141368 143360 144816 145920 146944 147402 147456 149568 153216 155160 155648 157440 159039 161280 163590 163780 165312 165504 167936 170240 171969 172032 174496 175104 176710 181020 183680 184320 185761 186960 188928 191520 193088 194560 196308 196536 199424 204288 206640 206880 209920 212052 215040 217224 218120 218880 220416 220672 224352 229292 233472 236160 241360 245385 245670 245760 247394 248256 249280 251904 255360 258048 261744 262048 265065 271530 272384 275520 275840 280440 282736 286615 286720 289632 291840 293888 294804 299136 306432 310320 311296 314880 318078 322560 327180 327560 330624 331008 335749 335872 340480 343938 344064 348992 350208 353420 362040 367360 368505 368640 371091 371522 373920 377856 383040 386176 389120 392616 393072 398848 408576 413280 413760 419840 424104 430080 434448 436240 437760 440832 441344 448704 458584 466944 472320 482720 490770 491340 494788 496512 498560 503808 510720 515907 516096 523488 524096 530130 543060 544768 551040 551680 557283 560880 565472 573230 573440 579264 583680 587776 589608 598272 612864 618485 620640 629760 636156 645120 654360 655120 661248 662016 671498 671744 680960 687876 697984 700416 706840 724080 734720 737010 737280 742182 743044 747840 755712 766080 772352 778240 785232 786144 795195 797696 817152 826560 827520 839680 848208 859845 860160 868896 872480 875520 881664 882688 897408 917168 928805 933888 944640 965440 981540 982680 989576 993024 997120 1007247 1007616 1021440 1031814 1032192 1046976 1048192 1060260 1086120 1089536 1102080 1103360 1113273 1114566 1121760 1130944 1146460 1158528 1167360 1175552 1179216 1196544 1225728 1236970 1241280 1259520 1272312 1290240 1300327 1308720 1310240 1322496 1324032 1342996 1361920 1375752 1395968 1400832 1413680 1448160 1469440 1474020 1484364 1486088 1495680 1511424 1532160 1544704 1556480 1570464 1572288 1590390 1595392 1634304 1653120 1655040 1671849 1678745 1679360 1696416 1719690 1720320 1737792 1744960 1751040 1763328 1765376 1794816 1834336 1855455 1857610 1889280 1930880 1963080 1965360 1979152 1986048 1994240 2014494 2015232 2042880 2063628 2093952 2096384 2120520 2172240 2179072 2204160 2206720 2226546 2229132 2243520 2261888 2292920 2317056 2334720 2350243 2351104 2358432 2393088 2451456 2473940 2482560 2519040 2544624 2579535 2580480 2600654 2617440 2620480 2644992 2648064 2685992 2723840 2751504 2786415 2791936 2801664 2827360 2896320 2938880 2948040 2968728 2972176 2991360 3021741 3022848 3064320 3089408 3140928 3144576 3180780 3190784 3268608 3306240 3310080 3343698 3357490 3358720 3392832 3439380 3475584 3489920 3502080 3526656 3529459 3530752 3589632 3668672 3710910 3715220 3778560 3861760 3900981 3926160 3930720 3958304 3972096 3988480 4028988 4085760 4127256 4187904 4192768 4241040 4344480 4408320 4413440 4453092 4458264 4487040 4523776 4585840 4634112 4669440 4700486 4702208 4716864 4786176 4902912 4947880 4965120 5036235 5038080 5089248 5159070 5160960 5201308 5234880 5240960 5289984 5296128 5371984 5447680 5503008 5566365 5572830 5583872 5654720 5792640 5877760 5896080 5937456 5944352 5982720 6043482 6045696 6128640 6178816 6281856 6289152 6361560 6381568 6501635 6537216 6612480 6620160 6687396 6714980 6785664 6878760 6951168 6979840 7004160 7050729 7053312 7058918 7061504 7179264 7337344 7421820 7430440 7557120 7616201 7723520 7801962 7852320 7861440 7916608 7944192 7976960 8057976 8171520 8254512 8359245 8375808 8385536 8482080 8688960 8816640 8826880 8906184 8916528 8974080 9047552 9171680 9268224 9400972 9433728 9572352 9805824 9895760 9930240 10072470 10076160 10178496 10318140 10402616 10469760 10481920 10579968 10588377 10592256 10743968 10895360 11006016 11132730 11145660 11167744 11309440 11585280 11702943 11751215 11755520 11792160 11874912 11888704 11965440 12086964 12257280 12357632 12563712 12578304 12723120 12763136 13003270 13224960 13240320 13374792 13429960 13571328 13757520 13902336 13959680 14008320 14101458 14106624 14117836 14358528 14674688 14843640 14860880 15108705 15114240 15232402 15447040 15603924 15704640 15722880 15833216 15888384 15953920 16115952 16343040 16509024 16718490 16751616 16771072 16964160 17377920 17633280 17647295 17653760 17812368 17833056 17948160 18095104 18343360 18536448 18801944 18867456 19144704 19504905 19611648 19791520 19860480 20144940 20356992 20636280 20805232 20939520 20963840 21152187 21159936 21176754 21184512 21487936 22012032 22265460 22291320 22335488 22618880 22848603 23170560 23405886 23502430 23511040 23584320 23749824 23777408 23930880 24173928 24514560 24706213 24715264 25127424 25156608 25446240 26006540 26449920 26480640 26749584 26859920 27142656 27515040 27804672 27919360 28202916 28235672 28717056 29349376 29687280 29721760 30217410 30228480 30464804 30894080 31207848 31409280 31445760 31666432 31765131 31776768 31907840 32231904 32686080 33018048 33436980 33503232 33542144 33928320 34755840 35253645 35266560 35294590 35307520 35624736 35666112 35896320 36190208 36686720 37072896 37603888 37734912 38081005 38289408 39009810 39583040 39720960 40289880 40713984 41272560 41610464 41879040 41927680 42304374 42319872 42353508 42975872 44024064 44530920 44582640 44670976 45237760 45697206 46341120 46811772 47004860 47168640 47499648 47554816 47861760 48347856 49029120 49412426 49430528 50254848 50313216 50892480 52013080 52899840 52941885 52961280 53313407 53499168 53719840 54285312 55030080 55609344 55838720 56405832 56471344 57434112 58514715 58698752 59374560 59443520 60434820 60929608 61788160 62415696 62818560 62891520 63332864 63530262 63553536 63815680 64463808 66036096 66873960 67006464 67084288 67856640 68545809 69511680 70507290 70533120 70589180 71249472 71332224 71792640 72380416 73373440 74118639 74145792 75207776 75469824 76162010 78019620 79166080 79441920 80579760 81427968 82545120 83220928 83758080 83855360 84608748 84707016 85951744 88048128 89061840 89165280 89341952 90475520 91394412 92682240 93623544 94009720 94337280 94999296 95109632 95723520 96695712 98058240 98824852 100509696 100626432 101784960 104026160 105760935 105799680 105883770 105922560 106626814 106998336 107439680 108570624 110060160 111218688 111677440 112811664 112942688 114243015 114868224 117029430 117397504 118749120 118887040 120869640 121859216 123531065 123576320 124831392 125637120 125783040 126665728 127060524 128927616 132072192 133747920 134012928 134168576 135713280 137091618 139023360 141014580 141178360 142498944 142664448 143585280 144707819 144760832 146746880 148237278 148291584 150415552 150939648 152324020 156039240 158332160 158825655 158883840 159940221 161159520 162855936 165090240 166441856 167516160 167710720 169217496 169414032 171903488 176096256 178123680 178330560 180951040 182788824 185364480 187247088 188019440 188674560 189998592 190219264 191447040 193391424 197649704 201019392 201252864 203569920 208052320 211521870 211599360 211767540 213253628 213996672 214879360 217141248 220120320 222355917 222437376 223354880 225623328 225885376 228486030 234058860 234795008 237498240 237774080 241739280 243718432 247062130 247152640 249662784 251274240 251566080 253331456 254121048 257855232 264144384 266567035 267495840 268025856 271426560 274183236 278046720 282029160 282356720 284997888 285328896 287170560 289415638 289521664 293493760 296474556 300831104 301879296 304648040 312078480 316664320 317651310 317767680 319880442 322319040 325711872 330180480 332883712 335032320 335421440 338434992 338828064 342729045 343806976 352192512 356247360 356661120 361902080 365577648 370593195 370728960 374494176 376038880 377349120 379997184 380438528 386782848 395299408 402038784 402505728 407139840 416104640 423043740 423535080 426507256 427993344 429758720 434123457 434282496 440240640 444711834 444874752 446709760 451246656 451770752 456972060 468117720 469590016 474996480 475548160 479820663 483478560 487436864 494124260 499325568 502548480 503132160 506662912 508242096 515710464 528288768 533134070 534991680 542853120 548366472 556093440 564058320 564713440 569995776 570657792 574341120 578831276 586987520 592949112 601662208 603758592 609296080 624156960 633328640 635302620 639760884 644638080 651423744 660360960 665767424 670064640 670842880 676869984 677656128 685458090 687613952 704385024 712494720 713322240 723539095 723804160 731155296 741186390 741457920 748988352 752077760 754698240 759994368 760877056 773565696 790598816 799701105 804077568 814279680 832209280 846087480 847070160 853014512 855986688 859517440 868246914 868564992 880481280 889423668 902493312 903541504 913944120 936235440 939180032 949992960 951096320 959641326 966957120 974873728 988248520 998651136 1005096960 1006264320 1012954733 1013325824 1016484192 1031420928 1056577536 1066268140 1069983360 1085706240 1096732944 1111779585 1112186880 1128116640 1129426880 1139991552 1141315584 1157662552 1173975040 1185898224 1203324416 1207517184 1218592160 1248313920 1266657280 1270605240 1279521768 1289276160 1302370371 1302847488 1320721920 1331534848 1340129280 1353739968 1355312256 1370916180 1375227904 1408770048 1424989440 1426644480 1447078190 1447608320 1462310592 1482372780 1497976704 1504155520 1509396480 1519988736 1521754112 1547131392 1581197632 1599402210 1628559360 1664418560 1692174960 1694140320 1706029024 1711973376 1719034880 1736493828 1760962560 1778847336 1804986624 1807083008 1827888240 1872470880 1899985920 1902192640 1919282652 1933914240 1949747456 1976497040 1997302272 2010193920 2012528640 2025909466 2026651648 2032968384 2062841856 2113155072 2132536280 2139966720 2170617285 2171412480 2193465888 2223559170 2224373760 2256233280 2258853760 2279983104 2282631168 2315325104 2347950080 2371796448 2399103315 2406648832 2437184320 2496627840 2533314560 2541210480 2559043536 2578552320 2604740742 2605694976 2641443840 2663069696 2707479936 2710624512 2741832360 2750455808 2817540096 2849978880 2853288960 2894156380 2924621184 2964745560 2995953408 3008311040 3018792960 3038864199 3039977472 3043508224 3094262784 3162395264 3198804420 3257118720 3328837120 3384349920 3388280640 3412058048 3423946752 3438069760 3472987656 3521925120 3557694672 3609973248 3614166016 3655776480 3744941760 3799971840 3804385280 3838565304 3867828480 3899494912 3952994080 3994604544 4020387840 4051818932 4065936768 4125683712 4226310144 4265072560 4279933440 4341234570 4342824960 4386931776 4447118340 4512466560 4517707520 4559966208 4565262336 4630650208 4695900160 4743592896 4798206630 4813297664 4874368640 4993255680 5064773665 5066629120 5082420960 5118087072 5157104640 5209481484 5282887680 5326139392 5414959872 5421249024 5483664720 5500911616 5699957760 5706577920 5788312760 5849242368 5929491120 5991906816 6016622080 6037585920 6077728398 6079954944 6188525568 6324790528 6397608840 6511851855 6514237440 6657674240 6768699840 6776561280 6824116096 6847893504 6876139520 6945975312 7043850240 7115389344 7219946496 7228332032 7311552960 7489883520 7599943680 7608770560 7677130608 7735656960 7798989824 7905988160 7989209088 8103637864 8131873536 8251367424 8452620288 8530145120 8559866880 8682469140 8773863552 8894236680 9024933120 9035415040 9116592597 9119932416 9130524672 9261300416 9487185792 9596413260 9626595328 9748737280 9986511360 10129547330 10133258240 10164841920 10236174144 10314209280 10418962968 10565775360 10652278784 10829919744 10842498048 10967329440 11399915520 11413155840 11576625520 11698484736 11858982240 11983813632 12033244160 12155456796 12377051136 12649581056 12795217680 13023703710 13028474880 13315348480 13537399680 13553122560 13648232192 13695787008 13752279040 13891950624 14087700480 14230778688 14439892992 14456664064 14623105920 14979767040 15194320995 15199887360 15217541120 15354261216 15471313920 15597979648 15811976320 15978418176 16207275728 16263747072 16502734848 17060290240 17119733760 17364938280 17547727104 17788473360 18049866240 18070830080 18233185194 18239864832 18522600832 18974371584 19192826520 19253190656 19497474560 19973022720 20259094660 20329683840 20472348288 20628418560 20837925936 21131550720 21304557568 21659839488 21684996096 21934658880 22799831040 22826311680 23153251040 23396969472 23717964480 23967627264 24066488320 24310913592 24754102272 25299162112 25590435360 26047407420 26630696960 27074799360 27106245120 27296464384 27391574016 27504558080 27783901248 28461557376 28879785984 28913328128 29246211840 29959534080 30388641990 30399774720 30708522432 30942627840 31195959296 31623952640 31956836352 32414551456 32527494144 34120580480 34239467520 34729876560 35095454208 35576946720 36099732480 36141660160 36466370388 37045201664 37948743168 38385653040 38506381312 38994949120 39946045440 40518189320 40659367680 40944696576 41256837120 41675851872 42263101440 43319678976 43369992192 43869317760 45582962985 45599662080 45652623360 46306502080 46793938944 47435928960 47935254528 48132976640 48621827184 49508204544 50598324224 51180870720 52094814840 53261393920 54149598720 54212490240 54592928768 55567802496 56923114752 57759571968 57826656256 58492423680 59919068160 60777283980 61417044864 61885255680 62391918592 63247905280 63913672704 64829102912 65054988288 68241160960 68478935040 69459753120 70190908416 71153893440 72199464960 72283320320 72932740776 74090403328 75897486336 76771306080 77989898240 79892090880 81036378640 81318735360 81889393152 82513674240 83351703744 86639357952 86739984384 87738635520 91165925970 91199324160 92613004160 93587877888 94871857920 95870509056 96265953280 97243654368 101196648448 102361741440 104189629680 106522787840 108299197440 108424980480 109185857536 111135604992 113846229504 115519143936 116984847360 119838136320 121554567960 122834089728 123770511360 124783837184 126495810560 129658205824 130109976576 136482321920 136957870080 138919506240 140381816832 142307786880 144398929920 144566640640 145865481552 148180806656 151794972672 153542612160 155979796480 159784181760 162072757280 162637470720 163778786304 166703407488 173278715904 173479968768 175477271040 182331851940 185226008320 187175755776 189743715840 191741018112 192531906560 194487308736 202393296896 204723482880 208379259360 216598394880 216849960960 218371715072 222271209984 227692459008 233969694720 239676272640 243109135920 245668179456 247541022720 252991621120 259316411648 260219953152 272964643840 277839012480 280763633664 284615573760 288797859840 289133281280 291730963104 296361613312 303589945344 307085224320 311959592960 319568363520 324145514560 325274941440 327557572608 333406814976 346557431808 350954542080 364663703880 370452016640 374351511552 379487431680 388974617472 404786593792 409446965760 416758518720 433196789760 433699921920 436743430144 444542419968 455384918016 467939389440 479352545280 486218271840 491336358912 505983242240 518632823296 520439906304 545929287680 555678024960 561527267328 569231147520 577595719680 583461926208 592723226624 607179890688 614170448640 623919185920 648291029120 650549882880 655115145216 666813629952 701909084160 729327407760 740904033280 758974863360 777949234944 818893931520 833517037440 866393579520 867399843840 873486860288 889084839936 910769836032 935878778880 958705090560 972436543680 982672717824 1011966484480 1037265646592 1091858575360 1111356049920 1123054534656 1138462295040 1166923852416 1185446453248 1214359781376 1228340897280 1296582058240 1301099765760 1310230290432 1333627259904 1403818168320 1458654815520 1481808066560 1517949726720 1555898469888 1637787863040 1667034074880 1732787159040 1778169679872 1821539672064 1871757557760 1944873087360 1965345435648 2023932968960 2074531293184 2183717150720 2222712099840 2276924590080 2333847704832 2370892906496 2456681794560 2593164116480 2602199531520 2620460580864 2667254519808 2807636336640 2917309631040 2963616133120 3035899453440 3111796939776 3275575726080 3334068149760 3556339359744 3643079344128 3889746174720 3930690871296 4149062586368 4367434301440 4445424199680 4553849180160 4667695409664 4913363589120 5186328232960 5334509039616 5615272673280 5834619262080 5927232266240 6071798906880 6223593879552 6551151452160 6668136299520 7112678719488 7779492349440 7861381742592 8298125172736 8890848399360 9107698360320 9335390819328 9826727178240 10372656465920 10669018079232 11669238524160 11854464532480 12447187759104 13102302904320 13336272599040 15558984698880 16596250345472 17781696798720 18215396720640 18670781638656 19653454356480 20745312931840 21338036158464 23338477048320 24894375518208 26672545198080 31117969397760 35563393597440 37341563277312 39306908712960 41490625863680 46676954096640 49788751036416 53345090396160 62235938795520 74683126554624 82981251727360 93353908193280 106690180792320 124471877591040 149366253109248 186707816386560 248943755182080 373415632773120 746831265546240
- Sum of all divisors σ(n): 3197892838008960
- Sum of proper divisors (its aliquot sum) s(n): 2451061572462720
- 746831265546240 is an abundant number, because the sum of its proper divisors (2451061572462720) is greater than itself. Its abundance is 1704230306916480
Bases of 746831265546240
- Binary: 101010011100111101001101000100101001000000000000002
- Hexadecimal: 0x2A73D344A4000
- Base-36: 7CQ9JOW740
Squares and roots of 746831265546240
- 746831265546240 squared (7468312655462402) is 557756939197398445685578137600
- 746831265546240 cubed (7468312655462403) is 416550320767990316367581039731442265882624000
-
The
square root of 746831265546240 is 27328213.7276888261 -
The
cube root of 746831265546240 is 90727.8940677913
Scales and comparisons
How big is 746831265546240?- 746,831,265,546,240 seconds is equal to 23,746,924 years, 7 weeks, 3 days, 6 hours, 24 minutes.
-
To count from 1 to 746,831,265,546,240 would take you about fifty-nine million, three hundred sixty-seven thousand, three hundred ten 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 746831265546240 cubic inches would be around 7560.7 feet tall.
Recreational maths with 746831265546240
- 746831265546240 backwards is 042645562138647
- 746831265546240 is a
Harshad number . - The number of decimal digits it has is: 15
- The sum of 746831265546240's digits is 63
- 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 746831265546240 - Facts about the integer". Numbermatics.com. 2024. Web. 21 June 2024.
APA style:
Numbermatics. (2024). Number 746831265546240 - Facts about the integer. Retrieved 21 June 2024, from https://numbermatics.com/n/746831265546240/
Chicago style:
Numbermatics. 2024. "Number 746831265546240 - Facts about the integer". https://numbermatics.com/n/746831265546240/
The information we have on file for 746831265546240 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 746831265546240, math, Factors of 746831265546240, curriculum, school, college, exams, university, Prime factorization of 746831265546240, STEM, science, technology, engineering, physics, economics, calculator, seven hundred forty-six trillion, eight hundred thirty-one billion, two hundred sixty-five million, five hundred forty-six thousand, two hundred forty.