81430068272

Names of 81430068272

• Cardinal: 81430068272 can be written as Eighty-one billion, four hundred thirty million, sixty-eight thousand, two hundred seventy-two.

Scientific notation

• Scientific notation: 8.1430068272 × 10¹⁰

Factors of 81430068272

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2831

Divisors of 81430068272

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 7 8 14 16 17 28 34 37 49 56 61 68 74 98 112 119 122 136 148 196 238 244 259 272 296 392 427 476 488 518 592 629 784 833 854 952 976 1036 1037 1258 1666 1708 1813 1904 2072 2074 2257 2516 2707 2989 3332 3416 3626 4144 4148 4403 4514 5032 5414 5978 6664 6832 7252 7259 8296 8806 9028 10064 10828 11956 13328 14504 14518 15799 16592 17612 18056 18949 21656 23912 29008 29036 30821 31598 35224 36112 37898 38369 43312 46019 47824 50813 58072 61642 63196 70448 75796 76738 92038 100159 101626 110593 116144 123284 126392 132643 151592 153476 165127 184076 200318 203252 221186 246568 252784 265286 268583 303184 306952 322133 330254 368152 400636 406504 442372 493136 530572 537166 613904 644266 660508 701113 736304 801272 813008 884744 1061144 1074332 1155889 1288532 1321016 1402226 1602544 1702703 1769488 1880081 2122288 2148664 2254931 2311778 2577064 2642032 2804452 2807159 3405406 3760162 4297328 4509862 4623556 4907791 5154128 5608904 5614318 6109699 6810812 7520324 8091223 9019724 9247112 9815582 11217808 11228636 11918921 12219398 13621624 15040648 16182446 18039448 18494224 19631164 19650113 22457272 23837842 24438796 27243248 30081296 32364892 36078896 39262328 39300226 42767893 44914544 47675684 48877592 64729784 78524656 78600452 83432447 85535786 95351368 97755184 103864883 129459568 137550791 157200904 166864894 171071572 190702736 207729766 275101582 299375251 314401808 333729788 342143144 415459532 550203164 598750502 667459576 684286288 727054181 830919064 1100406328 1197501004 1334919152 1454108362 1661838128 2200812656 2395002008 2908216724 4790004016 5089379267 5816433448 10178758534 11632866896 20357517068 40715034136 81430068272
• Sum of all divisors σ(n): 202923806688
• Sum of proper divisors (its aliquot sum) s(n): 121493738416
• 81430068272 is an abundant number, because the sum of its proper divisors (121493738416) is greater than itself. Its abundance is 40063670144

Bases of 81430068272

• Binary: 1001011110101100111000011110000110000₂
• Hexadecimal: 0x12F59C3C30
• Base-36: 11EPCYSW

Squares and roots of 81430068272

• 81430068272 squared (81430068272²) is 6630856018782581065984
• 81430068272 cubed (81430068272³) is 539951058311267690527451656859648
• The square root of 81430068272 is 285359.5421078469
• The cube root of 81430068272 is 4334.3928003451

Scales and comparisons

• 81,430,068,272 seconds is equal to 2,589 years, 11 weeks, 4 days, 15 hours, 24 minutes, 32 seconds.
• To count from 1 to 81,430,068,272 would take you about five thousand, one hundred seventy-eight 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 81430068272 cubic inches would be around 361.2 feet tall.

Recreational maths with 81430068272

• 81430068272 backwards is 27286003418
• The number of decimal digits it has is: 11
• The sum of 81430068272's digits is 41
• More coming soon!