81828979272

Names of 81828979272

• Cardinal: 81828979272 can be written as Eighty-one billion, eight hundred twenty-eight million, nine hundred seventy-nine thousand, two hundred seventy-two.

Scientific notation

• Scientific notation: 8.1828979272 × 10¹⁰

Factors of 81828979272

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 126279294

Divisors of 81828979272

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 324 648 126279289 252558578 378837867 505117156 757675734 1010234312 1136513601 1515351468 2273027202 3030702936 3409540803 4546054404 6819081606 9092108808 10228622409 13638163212 20457244818 27276326424 40914489636 81828979272
• Sum of all divisors σ(n): 229196911350
• Sum of proper divisors (its aliquot sum) s(n): 147367932078
• 81828979272 is an abundant number, because the sum of its proper divisors (147367932078) is greater than itself. Its abundance is 65538952806

Bases of 81828979272

• Binary: 1001100001101011000110010001001001000₂
• Hexadecimal: 0x130D632248
• Base-36: 11LAV0I0

Squares and roots of 81828979272

• 81828979272 squared (81828979272²) is 6695981848697405649984
• 81828979272 cubed (81828979272³) is 547925359902748247132716423131648
• The square root of 81828979272 is 286057.6502595237
• The cube root of 81828979272 is 4341.4590730795

Scales and comparisons

• 81,828,979,272 seconds is equal to 2,601 years, 47 weeks, 1 day, 16 hours, 1 minute, 12 seconds.
• To count from 1 to 81,828,979,272 would take you about five thousand, two hundred three 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 81828979272 cubic inches would be around 361.8 feet tall.

Recreational maths with 81828979272

• 81828979272 backwards is 27297982818
• The number of decimal digits it has is: 11
• The sum of 81828979272's digits is 63
• More coming soon!