21688140152

Names of 21688140152

• Cardinal: 21688140152 can be written as Twenty-one billion, six hundred eighty-eight million, one hundred forty thousand, one hundred fifty-two.

Scientific notation

• Scientific notation: 2.1688140152 × 10¹⁰

Factors of 21688140152

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 23072

Divisors of 21688140152

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 7 8 14 28 56 89 178 191 356 382 623 712 764 1246 1337 1528 2492 2674 4984 5348 10696 16999 22783 33998 45566 67996 91132 118993 135992 159481 182264 237986 318962 475972 637924 951944 1275848 2027687 4055374 4351553 8110748 8703106 14193809 16221496 17406212 28387618 30460871 34812424 56775236 60921742 113550472 121843484 243686968 387288217 774576434 1549152868 2711017519 3098305736 5422035038 10844070076 21688140152
• Sum of all divisors σ(n): 47244902400
• Sum of proper divisors (its aliquot sum) s(n): 25556762248
• 21688140152 is an abundant number, because the sum of its proper divisors (25556762248) is greater than itself. Its abundance is 3868622096

Bases of 21688140152

• Binary: 10100001100101101101100000101111000₂
• Hexadecimal: 0x50CB6C178
• Base-36: 9YOK41K

Squares and roots of 21688140152

• 21688140152 squared (21688140152²) is 470375423252794583104
• 21688140152 cubed (21688140152³) is 10201568103562928644025963191808
• The square root of 21688140152 is 147268.9381777433
• The cube root of 21688140152 is 2788.7362180991

Scales and comparisons

• 21,688,140,152 seconds is equal to 689 years, 32 weeks, 3 hours, 22 minutes, 32 seconds.
• To count from 1 to 21,688,140,152 would take you about one thousand, three hundred seventy-nine 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 21688140152 cubic inches would be around 232.4 feet tall.

Recreational maths with 21688140152

• 21688140152 backwards is 25104188612
• The number of decimal digits it has is: 11
• The sum of 21688140152's digits is 38
• More coming soon!