81407931704

Names of 81407931704

• Cardinal: 81407931704 can be written as Eighty-one billion, four hundred seven million, nine hundred thirty-one thousand, seven hundred four.

Scientific notation

• Scientific notation: 8.1407931704 × 10¹⁰

Factors of 81407931704

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 210

Divisors of 81407931704

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 11 22 44 88 121 197 242 394 484 788 968 1331 1576 2167 2662 4334 5324 8668 10648 17336 23837 38809 47674 77618 95348 155236 190696 262207 310472 426899 524414 853798 1048828 1707596 2097656 3415192 4695889 7645373 9391778 15290746 18783556 30581492 37567112 51654779 61162984 84099103 103309558 168198206 206619116 336396412 413238232 672792824 925090133 1850180266 3700360532 7400721064 10175991463 20351982926 40703965852 81407931704
• Sum of all divisors σ(n): 168748984800
• Sum of proper divisors (its aliquot sum) s(n): 87341053096
• 81407931704 is an abundant number, because the sum of its proper divisors (87341053096) is greater than itself. Its abundance is 5933121392

Bases of 81407931704

• Binary: 1001011110100010010100111010100111000₂
• Hexadecimal: 0x12F44A7538
• Base-36: 11EC6I48

Squares and roots of 81407931704

• 81407931704 squared (81407931704²) is 6627251344323128343616
• 81407931704 cubed (81407931704³) is 539510824823899420304717972401664
• The square root of 81407931704 is 285320.7523192101
• 81407931704 is a perfect cube number. Its cube root is 4334

Scales and comparisons

• 81,407,931,704 seconds is equal to 2,588 years, 27 weeks, 10 hours, 21 minutes, 44 seconds.
• To count from 1 to 81,407,931,704 would take you about five thousand, one hundred seventy-seven 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 81407931704 cubic inches would be around 361.2 feet tall.

Recreational maths with 81407931704

• 81407931704 backwards is 40713970418
• 81407931704 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81407931704's digits is 44
• More coming soon!