21329871408

Names of 21329871408

• Cardinal: 21329871408 can be written as Twenty-one billion, three hundred twenty-nine million, eight hundred seventy-one thousand, four hundred eight.

Scientific notation

• Scientific notation: 2.1329871408 × 10¹⁰

Factors of 21329871408

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4778233

Divisors of 21329871408

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 31 36 48 62 72 93 124 144 186 248 279 372 496 558 744 1116 1488 2232 4464 4778197 9556394 14334591 19112788 28669182 38225576 43003773 57338364 76451152 86007546 114676728 148124107 172015092 229353456 296248214 344030184 444372321 592496428 688060368 888744642 1184992856 1333116963 1777489284 2369985712 2666233926 3554978568 5332467852 7109957136 10664935704 21329871408
• Sum of all divisors σ(n): 61619641408
• Sum of proper divisors (its aliquot sum) s(n): 40289770000
• 21329871408 is an abundant number, because the sum of its proper divisors (40289770000) is greater than itself. Its abundance is 18959898592

Bases of 21329871408

• Binary: 10011110111010111000000001000110000₂
• Hexadecimal: 0x4F75C0230
• Base-36: 9SR9640

Squares and roots of 21329871408

• 21329871408 squared (21329871408²) is 454963414281815902464
• 21329871408 cubed (21329871408³) is 9704311121975763872286590349312
• The square root of 21329871408 is 146047.4970959791
• The cube root of 21329871408 is 2773.2950664767

Scales and comparisons

• 21,329,871,408 seconds is equal to 678 years, 11 weeks, 4 days, 12 hours, 16 minutes, 48 seconds.
• To count from 1 to 21,329,871,408 would take you about one thousand, three hundred fifty-six 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 21329871408 cubic inches would be around 231.1 feet tall.

Recreational maths with 21329871408

• 21329871408 backwards is 80417892312
• The number of decimal digits it has is: 11
• The sum of 21329871408's digits is 45
• More coming soon!