21082640838

Names of 21082640838

• Cardinal: 21082640838 can be written as Twenty-one billion, eighty-two million, six hundred forty thousand, eight hundred thirty-eight.

Scientific notation

• Scientific notation: 2.1082640838 × 10¹⁰

Factors of 21082640838

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 5073

Divisors of 21082640838

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 7 14 21 42 151 302 453 811 906 1057 1622 2114 2433 3171 4099 4866 5677 6342 8198 11354 12297 17031 24594 28693 34062 57386 86079 122461 172158 244922 367383 618949 734766 857227 1237898 1714454 1856847 2571681 3324289 3713694 4332643 5143362 6648578 8665286 9972867 12997929 19945734 23270023 25995858 46540046 69810069 139620138 501967639 1003935278 1505902917 3011805834 3513773473 7027546946 10541320419 21082640838
• Sum of all divisors σ(n): 48579686400
• Sum of proper divisors (its aliquot sum) s(n): 27497045562
• 21082640838 is an abundant number, because the sum of its proper divisors (27497045562) is greater than itself. Its abundance is 6414404724

Bases of 21082640838

• Binary: 10011101000100111111001000111000110₂
• Hexadecimal: 0x4E89F91C6
• Base-36: 9OO25S6

Squares and roots of 21082640838

• 21082640838 squared (21082640838²) is 444477744704105342244
• 21082640838 cubed (21082640838³) is 9370764652080909514647320960472
• The square root of 21082640838 is 145198.6254687005
• The cube root of 21082640838 is 2762.5384839557

Scales and comparisons

• 21,082,640,838 seconds is equal to 670 years, 18 weeks, 6 days, 1 hour, 7 minutes, 18 seconds.
• To count from 1 to 21,082,640,838 would take you about one thousand, three hundred forty 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 21082640838 cubic inches would be around 230.2 feet tall.

Recreational maths with 21082640838

• 21082640838 backwards is 83804628012
• 21082640838 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21082640838's digits is 42
• More coming soon!