21939139008

Names of 21939139008

• Cardinal: 21939139008 can be written as Twenty-one billion, nine hundred thirty-nine million, one hundred thirty-nine thousand and eight.

Scientific notation

• Scientific notation: 2.1939139008 × 10¹⁰

Factors of 21939139008

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 51077

Divisors of 21939139008

• Number of divisors d(n): 140
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 81 83 96 108 144 162 166 192 216 249 288 324 332 432 498 576 648 664 747 864 996 1296 1328 1494 1728 1992 2241 2592 2656 2988 3984 4482 5184 5312 5976 6723 7968 8964 11952 13446 15936 17928 23904 26892 35856 47808 50989 53784 71712 101978 107568 143424 152967 203956 215136 305934 407912 430272 458901 611868 815824 917802 1223736 1376703 1631648 1835604 2447472 2753406 3263296 3671208 4130109 4232087 4894944 5506812 7342416 8260218 8464174 9789888 11013624 12696261 14684832 16520436 16928348 22027248 25392522 29369664 33040872 33856696 38088783 44054496 50785044 66081744 67713392 76177566 88108992 101570088 114266349 132163488 135426784 152355132 203140176 228532698 264326976 270853568 304710264 342799047 406280352 457065396 609420528 685598094 812560704 914130792 1218841056 1371196188 1828261584 2437682112 2742392376 3656523168 5484784752 7313046336 10969569504 21939139008
• Sum of all divisors σ(n): 65819319720
• Sum of proper divisors (its aliquot sum) s(n): 43880180712
• 21939139008 is an abundant number, because the sum of its proper divisors (43880180712) is greater than itself. Its abundance is 21941041704

Bases of 21939139008

• Binary: 10100011011101011001011000111000000₂
• Hexadecimal: 0x51BACB1C0
• Base-36: A2TZW00

Squares and roots of 21939139008

• 21939139008 squared (21939139008²) is 481325820412347224064
• 21939139008 cubed (21939139008³) is 10559874082166129628303018688512
• The square root of 21939139008 is 148118.6652923931
• The cube root of 21939139008 is 2799.4530822943

Scales and comparisons

• 21,939,139,008 seconds is equal to 697 years, 31 weeks, 5 hours, 16 minutes, 48 seconds.
• To count from 1 to 21,939,139,008 would take you about one thousand, three hundred ninety-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 21939139008 cubic inches would be around 233.3 feet tall.

Recreational maths with 21939139008

• 21939139008 backwards is 80093193912
• The number of decimal digits it has is: 11
• The sum of 21939139008's digits is 45
• More coming soon!