21231570668

Names of 21231570668

• Cardinal: 21231570668 can be written as Twenty-one billion, two hundred thirty-one million, five hundred seventy thousand, six hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1231570668 × 10¹⁰

Factors of 21231570668

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2749

Divisors of 21231570668

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 7 11 14 22 28 44 77 109 154 218 269 308 436 538 763 1076 1199 1526 1883 2351 2398 2959 3052 3766 4702 4796 5918 7532 8393 9404 11836 16457 16786 20713 25861 29321 32914 33572 41426 51722 58642 65828 82852 103444 117284 181027 205247 256259 322531 362054 410494 512518 632419 645062 724108 820988 1025036 1264838 1290124 1793813 2257717 2529676 2818849 3587626 4426933 4515434 5637698 6956609 7175252 8853866 9030868 11275396 13913218 17707732 19731943 27826436 39463886 48696263 68933671 78927772 97392526 137867342 194785052 275734684 482535697 758270381 965071394 1516540762 1930142788 3033081524 5307892667 10615785334 21231570668
• Sum of all divisors σ(n): 46942156800
• Sum of proper divisors (its aliquot sum) s(n): 25710586132
• 21231570668 is an abundant number, because the sum of its proper divisors (25710586132) is greater than itself. Its abundance is 4479015464

Bases of 21231570668

• Binary: 10011110001100000000000111011101100₂
• Hexadecimal: 0x4F1800EEC
• Base-36: 9R4Q8RW

Squares and roots of 21231570668

• 21231570668 squared (21231570668²) is 450779593030277966224
• 21231570668 cubed (21231570668³) is 9570758785114626903568173117632
• The square root of 21231570668 is 145710.5715725527
• The cube root of 21231570668 is 2769.0281736401

Scales and comparisons

• 21,231,570,668 seconds is equal to 675 years, 5 weeks, 18 hours, 31 minutes, 8 seconds.
• To count from 1 to 21,231,570,668 would take you about one thousand, three hundred fifty 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 21231570668 cubic inches would be around 230.8 feet tall.

Recreational maths with 21231570668

• 21231570668 backwards is 86607513212
• The number of decimal digits it has is: 11
• The sum of 21231570668's digits is 41
• More coming soon!