21615512968

Names of 21615512968

• Cardinal: 21615512968 can be written as Twenty-one billion, six hundred fifteen million, five hundred twelve thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1615512968 × 10¹⁰

Factors of 21615512968

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2334

Divisors of 21615512968

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 7 8 14 28 56 491 683 982 1151 1366 1964 2302 2732 3437 3928 4604 4781 5464 6874 8057 9208 9562 13748 16114 19124 27496 32228 38248 64456 335353 565141 670706 786133 1130282 1341412 1572266 2260564 2347471 2682824 3144532 3955987 4521128 4694942 5502931 6289064 7911974 9389884 11005862 15823948 18779768 22011724 31647896 44023448 385991303 771982606 1543965212 2701939121 3087930424 5403878242 10807756484 21615512968
• Sum of all divisors σ(n): 46521630720
• Sum of proper divisors (its aliquot sum) s(n): 24906117752
• 21615512968 is an abundant number, because the sum of its proper divisors (24906117752) is greater than itself. Its abundance is 3290604784

Bases of 21615512968

• Binary: 10100001000011000101000110110001000₂
• Hexadecimal: 0x508628D88
• Base-36: 9XHBGJS

Squares and roots of 21615512968

• 21615512968 squared (21615512968²) is 467230400869776169024
• 21615512968 cubed (21615512968³) is 10099424789044485260795631903232
• The square root of 21615512968 is 147022.1512834035
• The cube root of 21615512968 is 2785.6198519097

Scales and comparisons

• 21,615,512,968 seconds is equal to 687 years, 15 weeks, 6 days, 13 hours, 9 minutes, 28 seconds.
• To count from 1 to 21,615,512,968 would take you about one thousand, three hundred seventy-four 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 21615512968 cubic inches would be around 232.1 feet tall.

Recreational maths with 21615512968

• 21615512968 backwards is 86921551612
• The number of decimal digits it has is: 11
• The sum of 21615512968's digits is 46
• More coming soon!