21364720839

Names of 21364720839

• Cardinal: 21364720839 can be written as Twenty-one billion, three hundred sixty-four million, seven hundred twenty thousand, eight hundred thirty-nine.

Scientific notation

• Scientific notation: 2.1364720839 × 10¹⁰

Factors of 21364720839

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 34205

Divisors of 21364720839

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 9 11 21 27 33 43 49 63 77 99 129 147 189 231 297 301 387 441 473 539 693 903 1161 1323 1419 1617 2079 2107 2709 3311 4257 4851 6321 8127 9933 12771 14553 18963 23177 29799 34141 56889 69531 89397 102423 208593 238987 307269 375551 625779 716961 921807 1126653 1468063 1672909 2150883 2628857 3379959 4404189 5018727 6452649 7886571 10139877 10276441 13212567 15056181 16148693 18401999 23659713 30829323 39637701 45168543 48446079 55205997 70979139 71935087 92487969 113040851 145338237 165617991 215805261 277463907 339122553 436014711 496853973 647415783 791285957 1017367659 1942247349 2373857871 3052102977 7121573613 21364720839
• Sum of all divisors σ(n): 41101505280
• Sum of proper divisors (its aliquot sum) s(n): 19736784441
• 21364720839 is a deficient number, because the sum of its proper divisors (19736784441) is less than itself. Its deficiency is 1627936398

Bases of 21364720839

• Binary: 10011111001011011111100010011000111₂
• Hexadecimal: 0x4F96FC4C7
• Base-36: 9TC043R

Squares and roots of 21364720839

• 21364720839 squared (21364720839²) is 456451296528400863921
• 21364720839 cubed (21364720839³) is 9751954526928894292758591949719
• The square root of 21364720839 is 146166.7569558825
• The cube root of 21364720839 is 2774.8046109325

Scales and comparisons

• 21,364,720,839 seconds is equal to 679 years, 17 weeks, 1 day, 20 hours, 40 minutes, 39 seconds.
• To count from 1 to 21,364,720,839 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 21364720839 cubic inches would be around 231.2 feet tall.

Recreational maths with 21364720839

• 21364720839 backwards is 93802746312
• The number of decimal digits it has is: 11
• The sum of 21364720839's digits is 45
• More coming soon!