21609808640

Names of 21609808640

• Cardinal: 21609808640 can be written as Twenty-one billion, six hundred nine million, eight hundred eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.160980864 × 10¹⁰

Factors of 21609808640

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1567

Divisors of 21609808640

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 256 280 320 448 560 640 896 1120 1280 1553 1792 2240 3106 4480 6212 7765 8960 10871 12424 15530 21742 24848 31060 43484 49696 54355 62120 86968 99392 108710 124240 173936 198784 217420 248480 347872 397568 434840 496960 695744 869680 993920 1391488 1739360 1987840 2411809 2782976 3478720 4823618 6957440 9647236 12059045 13914880 16882663 19294472 24118090 33765326 38588944 48236180 67530652 77177888 84413315 96472360 135061304 154355776 168826630 192944720 270122608 308711552 337653260 385889440 540245216 617423104 675306520 771778880 1080490432 1350613040 1543557760 2160980864 2701226080 3087115520 4321961728 5402452160 10804904320 21609808640
• Sum of all divisors σ(n): 59194967664
• Sum of proper divisors (its aliquot sum) s(n): 37585159024
• 21609808640 is an abundant number, because the sum of its proper divisors (37585159024) is greater than itself. Its abundance is 15975350384

Bases of 21609808640

• Binary: 10100001000000010111000001100000000₂
• Hexadecimal: 0x5080B8300
• Base-36: 9XDX728

Squares and roots of 21609808640

• 21609808640 squared (21609808640²) is 466983829457418649600
• 21609808640 cubed (21609808640³) is 10091431192549212046223212544000
• The square root of 21609808640 is 147002.7504504593
• The cube root of 21609808640 is 2785.3747889107

Scales and comparisons

• 21,609,808,640 seconds is equal to 687 years, 6 weeks, 3 days, 12 hours, 37 minutes, 20 seconds.
• To count from 1 to 21,609,808,640 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 21609808640 cubic inches would be around 232.1 feet tall.

Recreational maths with 21609808640

• 21609808640 backwards is 04680890612
• The number of decimal digits it has is: 11
• The sum of 21609808640's digits is 44
• More coming soon!