21339137408

Names of 21339137408

• Cardinal: 21339137408 can be written as Twenty-one billion, three hundred thirty-nine million, one hundred thirty-seven thousand, four hundred eight.

Scientific notation

• Scientific notation: 2.1339137408 × 10¹⁰

Factors of 21339137408

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2423

Divisors of 21339137408

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 16 32 64 127 128 254 508 1016 1093 1201 2032 2186 2402 4064 4372 4804 8128 8744 9608 16256 17488 19216 34976 38432 69952 76864 138811 139904 152527 153728 277622 305054 555244 610108 1110488 1220216 1312693 2220976 2440432 2625386 4441952 4880864 5250772 8883904 9761728 10501544 17767808 19523456 21003088 42006176 84012352 166712011 168024704 333424022 666848044 1333696088 2667392176 5334784352 10669568704 21339137408
• Sum of all divisors σ(n): 42921208320
• Sum of proper divisors (its aliquot sum) s(n): 21582070912
• 21339137408 is an abundant number, because the sum of its proper divisors (21582070912) is greater than itself. Its abundance is 242933504

Bases of 21339137408

• Binary: 10011110111111010010110010110000000₂
• Hexadecimal: 0x4F7E96580
• Base-36: 9SWRRSW

Squares and roots of 21339137408

• 21339137408 squared (21339137408²) is 455358785317504958464
• 21339137408 cubed (21339137408³) is 9716963689830211216384628621312
• The square root of 21339137408 is 146079.2162081931
• The cube root of 21339137408 is 2773.6965946339

Scales and comparisons

• 21,339,137,408 seconds is equal to 678 years, 26 weeks, 6 days, 18 hours, 10 minutes, 8 seconds.
• To count from 1 to 21,339,137,408 would take you about one thousand, three hundred fifty-seven 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 21339137408 cubic inches would be around 231.1 feet tall.

Recreational maths with 21339137408

• 21339137408 backwards is 80473193312
• The number of decimal digits it has is: 11
• The sum of 21339137408's digits is 41
• More coming soon!