81424902384

Names of 81424902384

• Cardinal: 81424902384 can be written as Eighty-one billion, four hundred twenty-four million, nine hundred two thousand, three hundred eighty-four.

Scientific notation

• Scientific notation: 8.1424902384 × 10¹⁰

Factors of 81424902384

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 80778685

Divisors of 81424902384

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 36 42 48 56 63 72 84 112 126 144 168 252 336 504 1008 80778673 161557346 242336019 323114692 484672038 565450711 646229384 727008057 969344076 1130901422 1292458768 1454016114 1696352133 1938688152 2261802844 2908032228 3392704266 3877376304 4523605688 5089056399 5816064456 6785408532 9047211376 10178112798 11632128912 13570817064 20356225596 27141634128 40712451192 81424902384
• Sum of all divisors σ(n): 260430444976
• Sum of proper divisors (its aliquot sum) s(n): 179005542592
• 81424902384 is an abundant number, because the sum of its proper divisors (179005542592) is greater than itself. Its abundance is 97580640208

Bases of 81424902384

• Binary: 1001011110101010011010110100011110000₂
• Hexadecimal: 0x12F54D68F0
• Base-36: 11EMA8S0

Squares and roots of 81424902384

• 81424902384 squared (81424902384²) is 6630014728243928883456
• 81424902384 cubed (81424902384³) is 539848302051744197076042912559104
• The square root of 81424902384 is 285350.4904218669
• The cube root of 81424902384 is 4334.3011410773

Scales and comparisons

• 81,424,902,384 seconds is equal to 2,589 years, 3 weeks, 20 hours, 26 minutes, 24 seconds.
• To count from 1 to 81,424,902,384 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 81424902384 cubic inches would be around 361.2 feet tall.

Recreational maths with 81424902384

• 81424902384 backwards is 48320942418
• The number of decimal digits it has is: 11
• The sum of 81424902384's digits is 45
• More coming soon!