21268374138

Names of 21268374138

• Cardinal: 21268374138 can be written as Twenty-one billion, two hundred sixty-eight million, three hundred seventy-four thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 2.1268374138 × 10¹⁰

Factors of 21268374138

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 922

Divisors of 21268374138

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 9 11 18 22 33 66 99 198 359 547 718 1077 1094 1641 2154 3231 3282 3949 4923 6017 6462 7898 9846 11847 12034 18051 23694 35541 36102 54153 71082 108306 196373 299209 392746 589119 598418 897627 1178238 1767357 1795254 2160103 2692881 3291299 3534714 4320206 5385762 6480309 6582598 9873897 12960618 19440927 19747794 29621691 38881854 59243382 107416031 214832062 322248093 644496186 966744279 1181576341 1933488558 2363152682 3544729023 7089458046 10634187069 21268374138
• Sum of all divisors σ(n): 50503059360
• Sum of proper divisors (its aliquot sum) s(n): 29234685222
• 21268374138 is an abundant number, because the sum of its proper divisors (29234685222) is greater than itself. Its abundance is 7966311084

Bases of 21268374138

• Binary: 10011110011101100011010001001111010₂
• Hexadecimal: 0x4F3B1A27A
• Base-36: 9RQN2II

Squares and roots of 21268374138

• 21268374138 squared (21268374138²) is 452343738473947243044
• 21268374138 cubed (21268374138³) is 9620615868845535130733409996072
• The square root of 21268374138 is 145836.8065270219
• The cube root of 21268374138 is 2770.6272234541

Scales and comparisons

• 21,268,374,138 seconds is equal to 676 years, 13 weeks, 6 days, 17 hours, 42 minutes, 18 seconds.
• To count from 1 to 21,268,374,138 would take you about one thousand, three hundred fifty-two 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 21268374138 cubic inches would be around 230.9 feet tall.

Recreational maths with 21268374138

• 21268374138 backwards is 83147386212
• The number of decimal digits it has is: 11
• The sum of 21268374138's digits is 45
• More coming soon!