72131431

Names of 72131431

• Cardinal: 72131431 can be written as Seventy-two million, one hundred thirty-one thousand, four hundred thirty-one.

Scientific notation

• Scientific notation: 7.2131431 × 10⁷

Factors of 72131431

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1833

Divisors of 72131431

• Number of divisors d(n): 8
• Complete list of divisors:
  1 97 769 967 74593 93799 743623 72131431
• Sum of all divisors σ(n): 73045280
• Sum of proper divisors (its aliquot sum) s(n): 913849
• 72131431 is a deficient number, because the sum of its proper divisors (913849) is less than itself. Its deficiency is 71217582

Bases of 72131431

• Binary: 100010011001010001101100111₂
• Hexadecimal: 0x44CA367
• Base-36: 16Y0YV

Squares and roots of 72131431

• 72131431 squared (72131431²) is 5202943338107761
• 72131431 cubed (72131431³) is 375295748389629633135991
• The square root of 72131431 is 8493.0224890789
• The cube root of 72131431 is 416.2697473099

Scales and comparisons

• 72,131,431 seconds is equal to 2 years, 15 weeks, 1 day, 20 hours, 30 minutes, 31 seconds.
• To count from 1 to 72,131,431 would take you about 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 72131431 cubic inches would be around 34.7 feet tall.

Recreational maths with 72131431

• 72131431 backwards is 13413127
• The number of decimal digits it has is: 8
• The sum of 72131431's digits is 22
• More coming soon!