21457537920

Names of 21457537920

• Cardinal: 21457537920 can be written as Twenty-one billion, four hundred fifty-seven million, five hundred thirty-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.145753792 × 10¹⁰

Factors of 21457537920

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 144

Divisors of 21457537920

• Number of divisors d(n): 1152
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 20 21 24 26 28 30 32 35 36 39 40 42 45 47 48 52 56 60 63 64 65 67 70 72 78 80 84 90 91 94 96 104 105 112 117 120 126 128 130 134 140 141 144 156 160 168 169 180 182 188 192 195 201 208 210 224 234 235 240 252 260 268 273 280 282 288 312 315 320 329 335 336 338 360 364 376 384 390 402 416 420 423 448 455 468 469 470 480 504 507 520 536 546 560 564 576 585 603 611 624 630 640 658 670 672 676 705 720 728 752 780 804 819 832 840 845 846 871 896 910 936 938 940 960 987 1005 1008 1014 1040 1072 1092 1120 1128 1152 1170 1183 1206 1222 1248 1260 1316 1340 1344 1352 1365 1407 1410 1440 1456 1504 1521 1560 1608 1638 1645 1664 1680 1690 1692 1742 1820 1833 1872 1876 1880 1920 1974 2010 2016 2028 2080 2115 2144 2184 2240 2256 2340 2345 2366 2412 2444 2496 2520 2535 2613 2632 2680 2688 2704 2730 2814 2820 2880 2912 2961 3008 3015 3042 3055 3120 3149 3216 3276 3290 3360 3380 3384 3484 3549 3640 3666 3744 3752 3760 3948 4020 4032 4056 4095 4160 4221 4230 4277 4288 4355 4368 4480 4512 4680 4690 4732 4824 4888 4935 4992 5040 5070 5226 5264 5360 5408 5460 5499 5628 5640 5760 5824 5915 5922 6016 6030 6084 6097 6110 6240 6298 6432 6552 6580 6720 6760 6768 6968 7035 7098 7280 7332 7488 7504 7520 7605 7839 7896 7943 8040 8064 8112 8190 8320 8442 8460 8554 8576 8710 8736 9024 9165 9360 9380 9447 9464 9648 9776 9870 10080 10140 10452 10528 10647 10720 10816 10920 10998 11256 11280 11323 11648 11830 11844 12060 12168 12194 12220 12480 12596 12831 12864 13065 13104 13160 13440 13520 13536 13936 14070 14196 14560 14664 14805 14976 15008 15040 15210 15678 15745 15792 15886 16080 16224 16380 16884 16920 17108 17420 17472 17745 18048 18291 18330 18720 18760 18894 18928 19296 19552 19740 20160 20280 20904 21056 21105 21294 21385 21440 21632 21840 21996 22043 22512 22560 22646 23660 23688 23829 24120 24336 24388 24440 24960 25192 25662 25728 26130 26208 26320 27040 27072 27495 27872 28140 28341 28392 29120 29328 29610 30016 30080 30420 30485 31356 31490 31584 31772 32160 32448 32760 33768 33840 33969 34216 34840 34944 35490 36582 36660 37440 37520 37788 37856 38493 38592 39104 39195 39480 39715 40320 40560 40937 41808 42112 42210 42588 42770 42880 43680 43992 44086 45024 45120 45292 47235 47320 47376 47658 48240 48672 48776 48880 50384 51324 52260 52416 52640 53235 54080 54144 54873 54990 55601 55744 56280 56615 56682 56784 58240 58656 59220 60032 60840 60970 62712 62980 63168 63544 64155 64320 64896 65520 66129 67536 67680 67938 68432 69680 70980 71487 73164 73320 74880 75040 75576 75712 76986 77184 78208 78390 78960 79261 79430 81120 81874 83616 84420 85176 85540 87360 87984 88172 90048 90240 90584 91455 94470 94640 94752 95316 96480 97344 97552 97760 100768 101907 102648 104520 104832 105280 106470 108160 109746 109980 110215 111202 111488 112560 113230 113364 113568 117312 118440 119145 121680 121940 122811 125424 125960 126336 127088 128310 128640 131040 132258 135072 135360 135876 136864 139360 141705 141960 142974 146328 146640 150080 151152 151424 153972 156780 157920 158522 158860 162240 163748 166803 167232 168840 169845 170352 171080 174720 175968 176344 180096 181168 182910 188940 189280 189504 190632 192465 192960 194688 195104 195520 198387 201536 203814 204685 205296 209040 210560 212940 219492 219960 220430 222404 225120 226460 226728 227136 234624 236880 237783 238290 243360 243880 245622 250848 251920 254176 256620 262080 264516 270144 270720 271752 273728 274365 278005 278720 283410 283920 285948 286559 292656 293280 300160 302304 307944 313560 315840 317044 317720 324480 327496 330645 333606 334464 337680 339690 340704 342160 351936 352688 357435 362336 365820 368433 377880 378560 379008 381264 384930 385920 390208 391040 396305 396774 403072 407628 409370 410592 418080 425880 438984 439920 440860 444808 450240 452920 453456 454272 473760 475566 476580 486720 487760 491244 500409 501696 503840 508352 509535 513240 524160 529032 532181 540288 543504 547456 548730 556010 557440 566820 567840 571896 573118 585312 586560 604608 614055 615888 627120 631680 634088 635440 654992 661290 667212 675360 679380 681408 684320 703872 705376 713349 714870 724672 731640 736866 755760 757120 762528 769860 780416 792610 793548 815256 818740 821184 834015 836160 851760 859677 877968 879840 881720 889616 900480 905840 906912 947520 951132 953160 973440 975520 982488 991935 1000818 1003392 1007680 1016704 1019070 1026480 1058064 1064362 1087008 1097460 1112020 1133640 1135680 1143792 1146236 1170624 1173120 1188915 1209216 1228110 1231776 1254240 1268176 1270880 1309984 1322580 1334424 1350720 1358760 1362816 1368640 1410752 1426698 1429740 1432795 1449344 1463280 1473732 1511520 1525056 1539720 1585220 1587096 1596543 1630512 1637480 1642368 1668030 1672320 1703520 1719354 1755936 1759680 1763440 1779232 1811680 1813824 1842165 1895040 1902264 1906320 1951040 1964976 1983870 2001636 2015360 2038140 2052960 2116128 2128724 2174016 2194920 2224040 2267280 2271360 2287584 2292472 2341248 2377830 2456220 2463552 2502045 2508480 2536352 2541760 2579031 2619968 2645160 2660905 2668848 2701440 2717520 2737280 2821504 2853396 2859480 2865590 2926560 2947464 3023040 3050112 3079440 3170440 3174192 3193086 3261024 3274960 3336060 3407040 3438708 3511872 3519360 3526880 3558464 3566745 3623360 3627648 3684330 3725267 3804528 3812640 3902080 3929952 3967740 4003272 4076280 4105920 4232256 4257448 4298385 4348032 4389840 4448080 4534560 4575168 4584944 4755660 4789629 4912440 4927104 5004090 5016960 5072704 5083520 5158062 5239936 5290320 5321810 5337696 5435040 5706792 5718960 5731180 5853120 5894928 6046080 6158880 6340880 6348384 6386172 6522048 6549920 6672120 6814080 6877416 7023744 7053760 7116928 7133490 7246720 7368660 7450534 7609056 7625280 7859904 7935480 7982715 8006544 8152560 8211840 8464512 8514896 8596770 8779680 8896160 9069120 9150336 9169888 9511320 9579258 9824880 10008180 10145408 10316124 10580640 10643620 10675392 10870080 11175801 11413584 11437920 11462360 11706240 11789856 12317760 12681760 12696768 12772344 12895155 13044096 13099840 13344240 13754832 14107520 14266980 14737320 14901068 15218112 15250560 15719808 15870960 15965430 16013088 16305120 17029792 17193540 17559360 17792320 18138240 18339776 18626335 19022640 19158516 19649760 20016360 20632248 21161280 21287240 21350784 21740160 22351602 22827168 22875840 22924720 23579712 23948145 24635520 25363520 25393536 25544688 25790310 26199680 26688480 27509664 28533960 29474640 29802136 30436224 31741920 31930860 32026176 32610240 33527403 34059584 34387080 35118720 35584640 36679552 37252670 38045280 38317032 39299520 40032720 41264496 42322560 42574480 44703204 45654336 45751680 45849440 47159424 47896290 50727040 51089376 51580620 53376960 55019328 55879005 57067920 58949280 59604272 63483840 63861720 64052352 65220480 67054806 68119168 68774160 74505340 76090560 76634064 78599040 80065440 82528992 85148960 89406408 91308672 91698880 95792580 102178752 103161240 106753920 110038656 111758010 114135840 117898560 119208544 126967680 127723440 134109612 137548320 149010680 152181120 153268128 160130880 165057984 167637015 170297920 178812816 183397760 191585160 204357504 206322480 223516020 228271680 235797120 238417088 255446880 268219224 275096640 298021360 306536256 320261760 330115968 335274030 340595840 357625632 383170320 412644960 447032040 456543360 476834176 510893760 536438448 550193280 596042720 613072512 670548060 715251264 766340640 825289920 894064080 1021787520 1072876896 1192085440 1341096120 1430502528 1532681280 1650579840 1788128160 2145753792 2384170880 2682192240 3065362560 3576256320 4291507584 5364384480 7152512640 10728768960 21457537920
• Sum of all divisors σ(n): 95044285440
• Sum of proper divisors (its aliquot sum) s(n): 73586747520
• 21457537920 is an abundant number, because the sum of its proper divisors (73586747520) is greater than itself. Its abundance is 52129209600

Bases of 21457537920

• Binary: 10011111110111110000000101110000000₂
• Hexadecimal: 0x4FEF80B80
• Base-36: 9UV9I80

Squares and roots of 21457537920

• 21457537920 squared (21457537920²) is 460425933588237926400
• 21457537920 cubed (21457537920³) is 9879606929321016971710169088000
• The square root of 21457537920 is 146483.9169328837
• The cube root of 21457537920 is 2778.8171010779

Scales and comparisons

• 21,457,537,920 seconds is equal to 682 years, 14 weeks, 5 days, 3 hours, 12 minutes.
• To count from 1 to 21,457,537,920 would take you about one thousand, three hundred sixty-four 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 21457537920 cubic inches would be around 231.6 feet tall.

Recreational maths with 21457537920

• 21457537920 backwards is 02973575412
• 21457537920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21457537920's digits is 45
• More coming soon!