21308318379

Names of 21308318379

• Cardinal: 21308318379 can be written as Twenty-one billion, three hundred eight million, three hundred eighteen thousand, three hundred seventy-nine.

Scientific notation

• Scientific notation: 2.1308318379 × 10¹⁰

Factors of 21308318379

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 106

Divisors of 21308318379

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 19 27 31 53 57 81 93 159 171 243 279 477 513 589 837 1007 1431 1539 1643 1767 2511 2809 3021 4293 4617 4929 5301 7533 8427 9063 12879 14787 15903 25281 27189 31217 44361 47709 53371 75843 81567 87079 93651 133083 143127 148877 160113 227529 244701 261237 280953 399249 446631 480339 682587 783711 842859 1339893 1441017 1654501 2351133 2528577 2828663 4019679 4323051 4615187 4963503 7053399 7585731 8485989 12059037 12969153 13845561 14890509 21160197 25457967 36177111 41536683 44671527 76373901 87688553 124610049 134014581 229121703 263065659 373830147 402043743 687365109 789196977 1121490441 2367590931 7102772793 21308318379
• Sum of all divisors σ(n): 35349350400
• Sum of proper divisors (its aliquot sum) s(n): 14041032021
• 21308318379 is a deficient number, because the sum of its proper divisors (14041032021) is less than itself. Its deficiency is 7267286358

Bases of 21308318379

• Binary: 10011110110000100110010001010101011₂
• Hexadecimal: 0x4F61322AB
• Base-36: 9SEF7OR

Squares and roots of 21308318379

• 21308318379 squared (21308318379²) is 454044432140829187641
• 21308318379 cubed (21308318379³) is 9674923318269048895310359953939
• The square root of 21308318379 is 145973.6907082917
• The cube root of 21308318379 is 2772.3606483873

Scales and comparisons

• 21,308,318,379 seconds is equal to 677 years, 28 weeks, 1 hour, 19 minutes, 39 seconds.
• To count from 1 to 21,308,318,379 would take you about one thousand, three hundred fifty-five 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 21308318379 cubic inches would be around 231 feet tall.

Recreational maths with 21308318379

• 21308318379 backwards is 97381380312
• The number of decimal digits it has is: 11
• The sum of 21308318379's digits is 45
• More coming soon!