21428389424640

Names of 21428389424640

• Cardinal: 21428389424640 can be written as Twenty-one trillion, four hundred twenty-eight billion, three hundred eighty-nine million, four hundred twenty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.142838942464 × 10¹³

Factors of 21428389424640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 45562

Divisors of 21428389424640

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 29 30 32 33 40 44 48 55 58 60 64 66 80 87 88 96 110 116 120 128 132 145 160 165 174 176 192 193 220 232 240 256 264 290 319 320 330 348 352 384 386 435 440 464 480 512 528 579 580 638 640 660 696 704 768 772 870 880 928 957 960 965 1056 1158 1160 1276 1280 1320 1392 1408 1536 1544 1595 1740 1760 1856 1914 1920 1930 2112 2123 2316 2320 2552 2560 2640 2784 2816 2895 3088 3190 3480 3520 3712 3828 3840 3860 4224 4246 4632 4640 4785 5104 5280 5568 5597 5632 5790 6176 6369 6380 6960 7040 7424 7656 7680 7720 8448 8492 9264 9280 9570 10208 10560 10615 11136 11194 11580 12352 12738 12760 13920 14080 14848 15312 15440 16791 16896 16984 18528 18560 19140 20416 21120 21230 22272 22388 23160 24704 25476 25520 27840 27985 28160 30624 30880 31845 33582 33968 37056 37120 38280 40832 42240 42460 44544 44776 45319 46320 49408 50952 51040 55680 55970 61248 61567 61760 63690 67164 67936 74112 74240 76560 81664 83955 84480 84920 89552 90638 92640 98816 101904 102080 111360 111940 122496 123134 123520 127380 134328 135872 135957 148224 153120 163328 167910 169840 179104 181276 184701 185280 203808 204160 222720 223880 226595 244992 246268 247040 254760 268656 271744 271914 296448 306240 307835 335820 339680 358208 362552 369402 370560 407616 408320 447760 453190 489984 492536 494080 498509 509520 537312 543488 543828 612480 615670 671640 679360 679785 716416 725104 738804 741120 815232 816640 895520 906380 923505 985072 997018 1019040 1074624 1086976 1087656 1224960 1231340 1314251 1343280 1358720 1359570 1432832 1450208 1477608 1482240 1495527 1630464 1791040 1812760 1847010 1970144 1994036 2038080 2149248 2175312 2449920 2462680 2492545 2628502 2686560 2717440 2719140 2865664 2900416 2955216 2991054 3260928 3582080 3625520 3694020 3940288 3942753 3988072 4076160 4298496 4350624 4925360 4985090 5257004 5373120 5434880 5438280 5800832 5910432 5982108 6571255 7164160 7251040 7388040 7477635 7880576 7885506 7976144 8152320 8596992 8701248 8746567 9850720 9970180 10514008 10746240 10876560 11601664 11820864 11964216 13142510 14328320 14456761 14502080 14776080 14955270 15761152 15771012 15952288 16304640 17402496 17493134 19701440 19713765 19940360 21028016 21492480 21753120 23203328 23641728 23928432 26239701 26285020 28913522 29004160 29552160 29910540 31522304 31542024 31904576 34804992 34986268 39402880 39427530 39880720 42056032 42984960 43370283 43506240 43732835 47283456 47856864 52479402 52570040 57827044 58008320 59104320 59821080 63084048 63809152 69609984 69972536 72283805 78805760 78855060 79761440 84112064 86740566 87012480 87465670 94566912 95713728 96212237 104958804 105140080 115654088 116016640 118208640 119642160 126168096 127618304 131198505 139945072 144567610 157611520 157710120 159522880 168224128 173481132 174024960 174931340 191427456 192424474 209917608 210280160 216851415 231308176 236417280 239284320 252336192 253650443 255236608 262397010 279890144 288636711 289135220 315420240 319045760 336448256 346962264 348049920 349862680 382854912 384848948 419835216 420560320 433702830 462616352 472834560 478568640 481061185 504672384 507300886 524794020 559780288 577273422 578270440 630840480 638091520 672896512 693924528 699725360 760951329 765709824 769697896 839670432 841120640 867405660 925232704 957137280 962122370 1009344768 1014601772 1049588040 1119560576 1154546844 1156540880 1261680960 1268252215 1276183040 1387849056 1399450720 1443183555 1521902658 1539395792 1679340864 1682241280 1734811320 1850465408 1914274560 1924244740 2018689536 2029203544 2099176080 2239121152 2309093688 2313081760 2523361920 2536504430 2775698112 2790154873 2798901440 2886367110 3043805316 3078791584 3358681728 3364482560 3469622640 3700930816 3804756645 3828549120 3848489480 4058407088 4198352160 4478242304 4618187376 4626163520 5046723840 5073008860 5551396224 5580309746 5597802880 5772734220 6087610632 6157583168 6717363456 6939245280 7401861632 7609513290 7696978960 8116814176 8370464619 8396704320 9236374752 9252327040 10093447680 10146017720 11102792448 11160619492 11195605760 11545468440 12175221264 12315166336 13434726912 13878490560 13950774365 15219026580 15393957920 16233628352 16740929238 16793408640 18472749504 18504654080 20292035440 22205584896 22321238984 22391211520 23090936880 24350442528 24630332672 27756981120 27901548730 30438053160 30787915840 32467256704 33481858476 33586817280 36945499008 37009308160 40584070880 41852323095 44642477968 46181873760 48700885056 49260665344 55513962240 55803097460 60876106320 61575831680 64934513408 66963716952 67173634560 73890998016 81168141760 83704646190 89284955936 92363747520 97401770112 111027924480 111606194920 121752212640 123151663360 129869026816 133927433904 147781996032 162336283520 167409292380 178569911872 184727495040 194803540224 223212389840 243504425280 246303326720 267854867808 324672567040 334818584760 357139823744 369454990080 389607080448 446424779680 487008850560 535709735616 649345134080 669637169520 714279647488 738909980160 892849559360 974017701120 1071419471232 1339274339040 1428559294976 1785699118720 1948035402240 2142838942464 2678548678080 3571398237440 4285677884928 5357097356160 7142796474880 10714194712320 21428389424640
• Sum of all divisors σ(n): 77710733337600
• Sum of proper divisors (its aliquot sum) s(n): 56282343912960
• 21428389424640 is an abundant number, because the sum of its proper divisors (56282343912960) is greater than itself. Its abundance is 34853954488320

Bases of 21428389424640

• Binary: 100110111110100101111100010100010111000000000₂
• Hexadecimal: 0x137D2F8A2E00
• Base-36: 7LG2DSR9C

Squares and roots of 21428389424640

• 21428389424640 squared (21428389424640²) is 459175873334023390239129600
• 21428389424640 cubed (21428389424640³) is 9839399428200622993702564521358393344000
• The square root of 21428389424640 is 4629080.8401495863
• The cube root of 21428389424640 is 27775.5825764869

Scales and comparisons

• 21,428,389,424,640 seconds is equal to 681,356 years, 26 weeks, 11 hours, 44 minutes.
• To count from 1 to 21,428,389,424,640 would take you about one million, seven hundred three thousand, three hundred ninety-one 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 21428389424640 cubic inches would be around 2314.6 feet tall.

Recreational maths with 21428389424640

• 21428389424640 backwards is 04642498382412
• The number of decimal digits it has is: 14
• The sum of 21428389424640's digits is 57
• More coming soon!