21313839768

Names of 21313839768

• Cardinal: 21313839768 can be written as Twenty-one billion, three hundred thirteen million, eight hundred thirty-nine thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1313839768 × 10¹⁰

Factors of 21313839768

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2848

Divisors of 21313839768

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 8 12 13 24 26 29 39 52 58 78 87 104 116 156 174 232 312 348 377 696 754 841 1131 1508 1682 2262 2523 2801 3016 3364 4524 5046 5602 6728 8403 9048 10092 10933 11204 16806 20184 21866 22408 24389 32799 33612 36413 43732 48778 65598 67224 72826 73167 81229 87464 97556 109239 131196 145652 146334 162458 195112 218478 243687 262392 291304 292668 317057 324916 436956 487374 585336 634114 649832 873912 951171 974748 1055977 1268228 1902342 1949496 2111954 2355641 2536456 3167931 3804684 4223908 4711282 6335862 7066923 7609368 8447816 9422564 12671724 14133846 18845128 25343448 28267692 30623333 56535384 61246666 68313589 91869999 122493332 136627178 183739998 204940767 244986664 273254356 367479996 409881534 546508712 734959992 819763068 888076657 1639526136 1776153314 2664229971 3552306628 5328459942 7104613256 10656919884 21313839768
• Sum of all divisors σ(n): 59453956800
• Sum of proper divisors (its aliquot sum) s(n): 38140117032
• 21313839768 is an abundant number, because the sum of its proper divisors (38140117032) is greater than itself. Its abundance is 16826277264

Bases of 21313839768

• Binary: 10011110110011001110110001010011000₂
• Hexadecimal: 0x4F6676298
• Base-36: 9SHPK0O

Squares and roots of 21313839768

• 21313839768 squared (21313839768²) is 454279765655978293824
• 21313839768 cubed (21313839768³) is 9682446135036110765850759992832
• The square root of 21313839768 is 145992.6017577603
• The cube root of 21313839768 is 2772.6000847641

Scales and comparisons

• 21,313,839,768 seconds is equal to 677 years, 37 weeks, 23 hours, 2 minutes, 48 seconds.
• To count from 1 to 21,313,839,768 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 21313839768 cubic inches would be around 231.1 feet tall.

Recreational maths with 21313839768

• 21313839768 backwards is 86793831312
• The number of decimal digits it has is: 11
• The sum of 21313839768's digits is 51
• More coming soon!