81403350840

Names of 81403350840

• Cardinal: 81403350840 can be written as Eighty-one billion, four hundred three million, three hundred fifty thousand, eight hundred forty.

Scientific notation

• Scientific notation: 8.140335084 × 10¹⁰

Factors of 81403350840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 592

Divisors of 81403350840

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 27 28 30 35 36 40 42 45 53 54 56 60 63 70 72 81 84 90 105 106 108 120 126 135 140 159 162 168 180 189 210 212 216 241 252 265 270 280 281 315 318 324 360 371 378 405 420 424 477 482 504 530 540 562 567 630 636 648 723 742 756 795 810 840 843 945 954 964 1060 1080 1113 1124 1134 1205 1260 1272 1405 1431 1446 1484 1512 1590 1620 1686 1687 1855 1890 1908 1928 1967 2120 2169 2226 2248 2268 2385 2410 2520 2529 2810 2835 2862 2892 2968 3180 3240 3339 3372 3374 3615 3710 3780 3816 3934 4215 4293 4338 4452 4536 4770 4820 5058 5061 5565 5620 5670 5724 5784 5901 6360 6507 6678 6744 6748 7155 7230 7420 7560 7587 7868 8430 8435 8586 8676 8904 9540 9640 9835 10017 10116 10122 10845 11130 11240 11340 11448 11802 12645 12773 13014 13356 13496 14310 14460 14840 14893 15174 15183 15736 16695 16860 16870 17172 17352 17703 19080 19521 19670 20034 20232 20244 21465 21690 22260 22680 22761 23604 25290 25305 25546 26028 26712 28620 28920 29505 29786 30051 30348 30366 32535 33390 33720 33740 34344 35406 37935 38319 39042 39340 40068 40488 42930 43380 44520 44679 45522 45549 47208 50085 50580 50610 51092 52056 53109 57240 59010 59572 60102 60696 60732 63865 65070 66780 67480 67721 70812 74465 75870 75915 76638 78084 78680 80136 85860 86760 88515 89358 89411 91044 91098 97605 100170 101160 101220 102184 104251 106218 113805 114957 118020 119144 120204 121464 127730 130140 133560 134037 135442 136647 141624 148930 150255 151740 151830 153276 156168 159327 171720 177030 178716 178822 182088 182196 191595 195210 200340 202440 203163 208502 212436 223395 227610 227745 229914 236040 240408 255460 260280 265545 268074 268233 270884 273294 297860 300510 303480 303660 306552 312753 318654 338605 344871 354060 357432 357644 364392 383190 390420 400680 402111 406326 417004 424872 446790 447055 455220 455490 459828 474047 510920 521255 531090 536148 536466 541768 546588 574785 595720 601020 607320 609489 625506 637308 670185 677210 683235 689742 708120 715288 766380 780840 796635 804222 804699 812652 834008 893580 894110 910440 910980 919656 938259 948094 1015815 1034613 1042510 1062180 1072296 1072932 1093176 1149570 1202040 1206333 1218978 1251012 1274616 1340370 1341165 1354420 1366470 1379484 1422141 1532760 1563765 1593270 1608444 1609398 1625304 1724355 1787160 1788220 1821960 1828467 1876518 1896188 2010555 2031630 2069226 2085020 2124360 2145864 2299140 2370235 2412666 2414097 2437956 2502024 2680740 2682330 2708840 2732940 2758968 2814777 2844282 3047445 3127530 3186540 3216888 3218796 3448710 3576440 3589213 3656934 3753036 3792376 4021110 4023495 4063260 4138452 4170040 4266423 4598280 4691295 4740470 4825332 4828194 4875912 5173065 5361480 5364660 5465880 5485401 5629554 5688564 6031665 6094890 6255060 6373080 6437592 6897420 7110705 7178426 7242291 7313868 7506072 8042220 8046990 8126520 8276904 8444331 8532846 9142335 9382590 9480940 9650664 9656388 10346130 10729320 10767639 10970802 11259108 11377128 12063330 12070485 12189780 12510120 12799269 13794840 14073885 14221410 14356852 14484582 14627736 16084440 16093980 16888662 17065692 17946065 18284670 18765180 18961880 19312776 20692260 21332115 21535278 21941604 22518216 24126660 24140970 24379560 25124491 25598538 27427005 28147770 28442820 28713704 28969164 32187960 32302917 33777324 34131384 35892130 36211455 36569340 37530360 38397807 41384520 42221655 42664230 43070556 43883208 48253320 48281940 50248982 51197076 53838195 54854010 56295540 56885640 57938328 63996345 64605834 67554648 71784260 72422910 73138680 75373473 76795614 84443310 85328460 86141112 96563880 96908751 100497964 102394152 107676390 109708020 112591080 125622455 127992690 129211668 143568520 144845820 150746946 153591228 161514585 168886620 170656920 191989035 193817502 200995928 215352780 219416040 226120419 251244910 255985380 258423336 289691640 290726253 301493892 307182456 323029170 337773240 376867365 383978070 387635004 430705560 452240838 484543755 502489820 511970760 581452506 602987784 646058340 678361257 753734730 767956140 775270008 904481676 969087510 1004979640 1130602095 1162905012 1292116680 1356722514 1453631265 1507469460 1535912280 1808963352 1938175020 2035083771 2261204190 2325810024 2713445028 2907262530 3014938920 3391806285 3876350040 4070167542 4522408380 5426890056 5814525060 6783612570 8140335084 9044816760 10175418855 11629050120 13567225140 16280670168 20350837710 27134450280 40701675420 81403350840
• Sum of all divisors σ(n): 321052533120
• Sum of proper divisors (its aliquot sum) s(n): 239649182280
• 81403350840 is an abundant number, because the sum of its proper divisors (239649182280) is greater than itself. Its abundance is 158245831440

Bases of 81403350840

• Binary: 1001011110100000001001000111100111000₂
• Hexadecimal: 0x12F4048F38
• Base-36: 11E9GBI0

Squares and roots of 81403350840

• 81403350840 squared (81403350840²) is 6626505527980128705600
• 81403350840 cubed (81403350840³) is 539419754337365853570311872704000
• The square root of 81403350840 is 285312.7246373705
• The cube root of 81403350840 is 4333.9187063777

Scales and comparisons

• 81,403,350,840 seconds is equal to 2,588 years, 19 weeks, 3 days, 9 hours, 54 minutes.
• To count from 1 to 81,403,350,840 would take you about five thousand, one hundred seventy-six 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 81403350840 cubic inches would be around 361.2 feet tall.

Recreational maths with 81403350840

• 81403350840 backwards is 04805330418
• 81403350840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81403350840's digits is 36
• More coming soon!