21457940829138

Names of 21457940829138

• Cardinal: 21457940829138 can be written as Twenty-one trillion, four hundred fifty-seven billion, nine hundred forty million, eight hundred twenty-nine thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 2.1457940829138 × 10¹³

Factors of 21457940829138

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 327412548

Divisors of 21457940829138

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 6 9 11 18 22 33 66 99 198 331 662 993 1986 2979 3641 5958 7282 10923 21846 32769 65538 327412201 654824402 982236603 1964473206 2946709809 3601534211 5893419618 7203068422 10804602633 21609205266 32413807899 64827615798 108373438531 216746877062 325120315593 650240631186 975360946779 1192107823841 1950721893558 2384215647682 3576323471523 7152646943046 10728970414569 21457940829138
• Sum of all divisors σ(n): 50871998297952
• Sum of proper divisors (its aliquot sum) s(n): 29414057468814
• 21457940829138 is an abundant number, because the sum of its proper divisors (29414057468814) is greater than itself. Its abundance is 7956116639676

Bases of 21457940829138

• Binary: 100111000010000010000111100001101001111010010₂
• Hexadecimal: 0x138410F0D3D2
• Base-36: 7LTN3XWWI

Squares and roots of 21457940829138

• 21457940829138 squared (21457940829138²) is 460443224626787598909823044
• 21457940829138 cubed (21457940829138³) is 9880163469219105070756464473662219056072
• The square root of 21457940829138 is 4632271.6704806941
• The cube root of 21457940829138 is 27788.3449362621

Scales and comparisons

• 21,457,940,829,138 seconds is equal to 682,296 years, 7 weeks, 3 days, 15 hours, 12 minutes, 18 seconds.
• To count from 1 to 21,457,940,829,138 would take you about one million, seven hundred five thousand, seven hundred forty 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 21457940829138 cubic inches would be around 2315.7 feet tall.

Recreational maths with 21457940829138

• 21457940829138 backwards is 83192804975412
• The number of decimal digits it has is: 14
• The sum of 21457940829138's digits is 63
• More coming soon!