81732490420

Names of 81732490420

• Cardinal: 81732490420 can be written as Eighty-one billion, seven hundred thirty-two million, four hundred ninety thousand, four hundred twenty.

Scientific notation

• Scientific notation: 8.173249042 × 10¹⁰

Factors of 81732490420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 38207

Divisors of 81732490420

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 10 14 20 23 28 35 46 70 92 115 140 161 230 322 460 644 677 805 1354 1610 2708 3220 3385 4739 6770 9478 13540 15571 18956 23695 31142 37493 47390 62284 74986 77855 94780 108997 149972 155710 187465 217994 262451 311420 374930 435988 524902 544985 749860 862339 1049804 1089970 1312255 1724678 2179940 2624510 3449356 4311695 5249020 6036373 8623390 12072746 17246780 24145492 25382761 30181865 50765522 60363730 101531044 120727460 126913805 177679327 253827610 355358654 507655220 583803503 710717308 888396635 1167607006 1776793270 2335214012 2919017515 3553586540 4086624521 5838035030 8173249042 11676070060 16346498084 20433122605 40866245210 81732490420
• Sum of all divisors σ(n): 204994395648
• Sum of proper divisors (its aliquot sum) s(n): 123261905228
• 81732490420 is an abundant number, because the sum of its proper divisors (123261905228) is greater than itself. Its abundance is 41529414808

Bases of 81732490420

• Binary: 1001100000111101000101101010010110100₂
• Hexadecimal: 0x1307A2D4B4
• Base-36: 11JPEX84

Squares and roots of 81732490420

• 81732490420 squared (81732490420²) is 6680199990255391776400
• 81732490420 cubed (81732490420³) is 545989381707232901717959782088000
• The square root of 81732490420 is 285888.9477052235
• The cube root of 81732490420 is 4339.7519877103

Scales and comparisons

• 81,732,490,420 seconds is equal to 2,598 years, 43 weeks, 4 days, 21 hours, 33 minutes, 40 seconds.
• To count from 1 to 81,732,490,420 would take you about five thousand, one hundred ninety-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 81732490420 cubic inches would be around 361.6 feet tall.

Recreational maths with 81732490420

• 81732490420 backwards is 02409423718
• The number of decimal digits it has is: 11
• The sum of 81732490420's digits is 40
• More coming soon!