21315468188

Names of 21315468188

• Cardinal: 21315468188 can be written as Twenty-one billion, three hundred fifteen million, four hundred sixty-eight thousand, one hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1315468188 × 10¹⁰

Factors of 21315468188

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 220

Divisors of 21315468188

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 4 7 14 28 31 41 62 82 124 139 164 217 278 287 434 556 574 868 961 973 1148 1271 1922 1946 2542 3844 3892 4309 5084 5699 6727 8618 8897 11398 13454 17236 17794 19321 22796 26908 30163 35588 38642 39401 39893 60326 77284 78802 79786 120652 133579 135247 157604 159572 176669 267158 270494 275807 353338 534316 540988 551614 598951 706676 792161 935053 1103228 1197902 1236683 1584322 1870106 2395804 2473366 3168644 3740212 4192657 4946732 5476739 5545127 8385314 10953478 11090254 16770628 18567481 21906956 22180508 24556991 37134962 38337173 49113982 74269924 76674346 98227964 129972367 153348692 171898937 259944734 343797874 519889468 687595748 761266721 1522533442 3045066884 5328867047 10657734094 21315468188
• Sum of all divisors σ(n): 45451866096
• Sum of proper divisors (its aliquot sum) s(n): 24136397908
• 21315468188 is an abundant number, because the sum of its proper divisors (24136397908) is greater than itself. Its abundance is 2820929720

Bases of 21315468188

• Binary: 10011110110100000000011101110011100₂
• Hexadecimal: 0x4F6803B9C
• Base-36: 9SIOGIK

Squares and roots of 21315468188

• 21315468188 squared (21315468188²) is 454349184073640003344
• 21315468188 cubed (21315468188³) is 9684665579365429740643245620672
• The square root of 21315468188 is 145998.1787146675
• The cube root of 21315468188 is 2772.6706936971

Scales and comparisons

• 21,315,468,188 seconds is equal to 677 years, 39 weeks, 5 days, 19 hours, 23 minutes, 8 seconds.
• To count from 1 to 21,315,468,188 would take you about one thousand, three hundred fifty-five 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 21315468188 cubic inches would be around 231.1 feet tall.

Recreational maths with 21315468188

• 21315468188 backwards is 88186451312
• The number of decimal digits it has is: 11
• The sum of 21315468188's digits is 47
• More coming soon!