128523431872

Names of 128523431872

• Cardinal: 128523431872 can be written as One hundred twenty-eight billion, five hundred twenty-three million, four hundred thirty-one thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.28523431872 × 10¹¹

Factors of 128523431872

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 29707

Divisors of 128523431872

• Number of divisors d(n): 56
• Complete list of divisors:
  1 2 4 8 11 16 22 32 44 64 88 176 352 704 8693 17386 21001 34772 42002 69544 84004 95623 139088 168008 191246 231011 278176 336016 382492 462022 556352 672032 764984 924044 1344064 1529968 1848088 3059936 3696176 6119872 7392352 14784704 182561693 365123386 730246772 1460493544 2008178623 2920987088 4016357246 5841974176 8032714492 11683948352 16065428984 32130857968 64261715936 128523431872
• Sum of all divisors σ(n): 278269275312
• Sum of proper divisors (its aliquot sum) s(n): 149745843440
• 128523431872 is an abundant number, because the sum of its proper divisors (149745843440) is greater than itself. Its abundance is 21222411568

Bases of 128523431872

• Binary: 1110111101100100101111110111111000000₂
• Hexadecimal: 0x1DEC97EFC0
• Base-36: 1N1JJ6PS

Squares and roots of 128523431872

• 128523431872 squared (128523431872²) is 16518272540156625424384
• 128523431872 cubed (128523431872³) is 2122985075457948431940240111566848
• The square root of 128523431872 is 358501.6483532537
• The cube root of 128523431872 is 5046.5444696507

Scales and comparisons

• 128,523,431,872 seconds is equal to 4,086 years, 33 weeks, 4 days, 17 hours, 17 minutes, 52 seconds.
• To count from 1 to 128,523,431,872 would take you about eight thousand, one hundred seventy-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 128523431872 cubic inches would be around 420.5 feet tall.

Recreational maths with 128523431872

• 128523431872 backwards is 278134325821
• The number of decimal digits it has is: 12
• The sum of 128523431872's digits is 46
• More coming soon!