81300038820

Names of 81300038820

• Cardinal: 81300038820 can be written as Eighty-one billion, three hundred million, thirty-eight thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 8.130003882 × 10¹⁰

Factors of 81300038820

• Number of distinct prime factors ω(n): 9
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 518

Divisors of 81300038820

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 7 10 11 12 13 14 15 20 21 22 26 28 30 33 35 39 42 44 47 52 55 60 65 66 70 77 78 83 84 91 94 105 110 130 132 140 141 143 154 156 165 166 182 188 195 210 220 231 235 249 260 273 282 286 308 329 330 332 347 364 385 390 415 420 429 455 462 470 498 517 546 564 572 581 611 658 660 694 705 715 770 780 830 858 910 913 924 940 987 996 1001 1034 1041 1079 1092 1155 1162 1222 1245 1316 1365 1388 1410 1430 1540 1551 1645 1660 1716 1735 1743 1820 1826 1833 1974 2002 2068 2082 2145 2158 2310 2324 2429 2444 2490 2585 2730 2739 2820 2860 2905 3003 3055 3102 3237 3290 3470 3486 3619 3652 3666 3817 3901 3948 4004 4164 4277 4290 4316 4511 4565 4620 4858 4935 4980 5005 5170 5205 5395 5460 5478 5810 6006 6110 6204 6391 6474 6580 6721 6940 6972 7238 7287 7332 7553 7634 7755 7802 8554 8580 8715 9022 9130 9165 9716 9870 10010 10340 10410 10790 10857 10956 11451 11620 11703 11869 12012 12145 12220 12782 12831 12948 13442 13533 13695 14476 14574 15015 15106 15268 15510 15604 16185 16309 17108 17430 18044 18095 18260 18330 19085 19173 19505 19740 20020 20163 20820 21385 21580 21714 22555 22659 22902 23406 23738 24290 25564 25662 26719 26884 27066 27307 27390 28801 29148 30030 30212 31020 31577 31955 32370 32618 33605 34860 35607 36190 36435 36660 37765 38170 38346 39010 40326 42770 42911 43428 45110 45318 45804 46812 47047 47476 48580 48927 49621 50713 51324 53438 54132 54285 54614 54780 57255 57602 58515 59345 60060 63154 63910 64155 64740 65236 67210 67665 71214 72380 72870 75530 76340 76692 78020 80157 80652 81545 81921 83083 85540 85822 86403 90220 90636 94094 94731 95865 97854 99242 100815 101426 106876 108570 109228 113295 114163 114510 115204 117030 118690 126308 127820 128310 128733 133595 134420 135330 136535 141141 142428 144005 145740 148863 151060 152139 157885 160314 163090 163842 166166 171644 172806 178035 179399 188188 189462 191730 195708 198484 201607 201630 202852 212017 214555 217140 226590 228326 229020 234060 235235 237380 244635 248105 249249 253565 256620 257466 267190 270660 273070 282282 288010 297726 300377 304278 315770 316811 320628 326180 327684 332332 342489 345612 347347 354991 356070 358798 374413 378924 383460 400785 403214 403260 409605 415415 424034 429110 432015 453180 456652 470470 473655 489270 496210 498498 507130 514932 534380 538197 546140 557843 564564 570815 576020 595452 600754 604821 608556 631540 633622 636051 643665 684978 694694 705705 709982 712140 717596 744315 748826 760695 801570 806428 819210 830830 848068 858220 864030 896995 901131 940940 947310 950433 978540 992420 996996 1008035 1014260 1042041 1060085 1064973 1076394 1115686 1123239 1141630 1201508 1209642 1246245 1255793 1267244 1272102 1287330 1353647 1369956 1389388 1411410 1419964 1484119 1488630 1497652 1501885 1521390 1584055 1603140 1638420 1661660 1673529 1712445 1728060 1736735 1774955 1793990 1802262 1872065 1894620 1900866 2016070 2084082 2120170 2129946 2152788 2217677 2231372 2246478 2283260 2332187 2419284 2492490 2511586 2544204 2574660 2620891 2690985 2707294 2789215 2822820 2968238 2977260 3003770 3024105 3042780 3168110 3180255 3347058 3424890 3473470 3549910 3587980 3604524 3744130 3767379 3801732 3904901 4032140 4060941 4118543 4168164 4240340 4259892 4435354 4452357 4492956 4505655 4664374 4752165 4984980 5023172 5210205 5241782 5324865 5381970 5414588 5578430 5616195 5936476 6007540 6048210 6278965 6336220 6360510 6653031 6694116 6768235 6849780 6946940 6996561 7099820 7420595 7488260 7534758 7809802 7862673 8121882 8237086 8367645 8870708 8904714 9011310 9328748 9475529 9504330 10420410 10483564 10649730 10763940 11088385 11156860 11232390 11660935 11714703 12096420 12355629 12557930 12721020 13104455 13306062 13536470 13993122 14841190 14890117 15069516 15619604 15725346 16243764 16325309 16474172 16735290 17597411 17809428 18022620 18836895 18951058 19008660 19524505 20304705 20592715 20840820 21299460 22176770 22261785 22464780 23321870 23429406 24711258 25115860 26208910 26612124 27072940 27986244 28426587 28829801 29682380 29780234 31450692 32650618 33265155 33470580 34982805 35194822 37673790 37902116 39049010 39313365 40609410 41185430 44353540 44523570 44670351 46643740 46858812 47377645 48975927 49422516 52417820 52792233 56853174 57659602 58573515 59560468 61778145 65301236 66530310 69965610 70389644 74450585 75347580 78098020 78626730 81218820 81626545 82370860 86489403 87987055 89047140 89340702 94755290 97951854 104230819 105584466 113706348 115319204 117147030 123181877 123556290 133060620 139931220 142132935 144149005 148901170 157253460 163253090 172978806 175974110 178681404 189510580 193571521 195903708 208461638 211168932 223351755 234294060 244879635 246363754 247112580 263961165 284265870 288298010 297802340 312692457 326506180 345957612 351948220 369545631 387143042 416923276 432447015 446703510 489759270 492727508 521154095 527922330 568531740 576596020 580714563 615909385 625384914 739091262 774286084 864894030 893407020 967857605 979518540 1042308190 1055844660 1161429126 1231818770 1250769828 1355000647 1478182524 1563462285 1729788060 1847728155 1935715210 2084616380 2322858252 2463637540 2710001294 2903572815 3126924570 3695456310 3871430420 4065001941 5420002588 5807145630 6253849140 6775003235 7390912620 8130003882 11614291260 13550006470 16260007764 20325009705 27100012940 40650019410 81300038820
• Sum of all divisors σ(n): 316816883712
• Sum of proper divisors (its aliquot sum) s(n): 235516844892
• 81300038820 is an abundant number, because the sum of its proper divisors (235516844892) is greater than itself. Its abundance is 154216806072

Bases of 81300038820

• Binary: 1001011101101110111000010010010100100₂
• Hexadecimal: 0x12EDDC24A4
• Base-36: 11CJXZFO

Squares and roots of 81300038820

• 81300038820 squared (81300038820²) is 6609696312133506992400
• 81300038820 cubed (81300038820³) is 537368566764864955504861444968000
• The square root of 81300038820 is 285131.6166614989
• The cube root of 81300038820 is 4332.0844843951

Scales and comparisons

• 81,300,038,820 seconds is equal to 2,585 years, 4 weeks, 4 days, 16 hours, 7 minutes.
• To count from 1 to 81,300,038,820 would take you about five thousand, one hundred seventy 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 81300038820 cubic inches would be around 361 feet tall.

Recreational maths with 81300038820

• 81300038820 backwards is 02883000318
• 81300038820 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81300038820's digits is 33
• More coming soon!