21356629372

Names of 21356629372

• Cardinal: 21356629372 can be written as Twenty-one billion, three hundred fifty-six million, six hundred twenty-nine thousand, three hundred seventy-two.

Scientific notation

• Scientific notation: 2.1356629372 × 10¹⁰

Factors of 21356629372

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 14792

Divisors of 21356629372

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 13 17 26 34 52 68 127 169 221 254 338 442 508 676 884 1651 2159 2873 3302 4318 5746 6604 8636 11492 14633 21463 28067 29266 42926 56134 58532 85852 112268 190229 248761 364871 380458 497522 729742 760916 995044 1459484 1858391 2472977 3233893 3716782 4945954 6467786 7433564 9891908 12935572 24159083 31592647 42040609 48318166 63185294 84081218 96636332 126370588 168162436 314068079 410704411 628136158 821408822 1256272316 1642817644 5339157343 10678314686 21356629372
• Sum of all divisors σ(n): 43191138816
• Sum of proper divisors (its aliquot sum) s(n): 21834509444
• 21356629372 is an abundant number, because the sum of its proper divisors (21834509444) is greater than itself. Its abundance is 477880072

Bases of 21356629372

• Binary: 10011111000111101000100110101111100₂
• Hexadecimal: 0x4F8F44D7C
• Base-36: 9T76OOS

Squares and roots of 21356629372

• 21356629372 squared (21356629372²) is 456105618132973114384
• 21356629372 cubed (21356629372³) is 9740878640952869416339650086848
• The square root of 21356629372 is 146139.0754452757
• The cube root of 21356629372 is 2774.4542658447

Scales and comparisons

• 21,356,629,372 seconds is equal to 679 years, 3 weeks, 6 days, 5 hours, 2 minutes, 52 seconds.
• To count from 1 to 21,356,629,372 would take you about one thousand, three hundred fifty-eight 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 21356629372 cubic inches would be around 231.2 feet tall.

Recreational maths with 21356629372

• 21356629372 backwards is 27392665312
• The number of decimal digits it has is: 11
• The sum of 21356629372's digits is 46
• More coming soon!