21642089768

Names of 21642089768

• Cardinal: 21642089768 can be written as Twenty-one billion, six hundred forty-two million, eighty-nine thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1642089768 × 10¹⁰

Factors of 21642089768

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 9735

Divisors of 21642089768

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 8 13 17 26 31 34 41 52 62 68 82 104 124 136 164 221 248 328 403 442 527 533 697 806 884 1054 1066 1271 1394 1612 1768 2108 2132 2542 2788 3224 4216 4264 5084 5576 6851 9061 9631 10168 13702 16523 18122 19262 21607 27404 33046 36244 38524 43214 54808 66092 72488 77048 86428 125203 132184 163727 172856 250406 280891 298561 327454 394871 500812 561782 597122 654908 789742 1001624 1123564 1194244 1309816 1579484 2128451 2247128 2388488 3158968 3881293 4256902 5075537 5133323 6712807 7762586 8513804 10151074 10266646 12241001 13425614 15525172 17027608 20302148 20533292 24482002 26851228 31050344 40604296 41066584 48964004 53702456 65981981 87266491 97928008 131963962 159133013 174532982 208097017 263927924 318266026 349065964 416194034 527855848 636532052 698131928 832388068 1273064104 1664776136 2705261221 5410522442 10821044884 21642089768
• Sum of all divisors σ(n): 48933642240
• Sum of proper divisors (its aliquot sum) s(n): 27291552472
• 21642089768 is an abundant number, because the sum of its proper divisors (27291552472) is greater than itself. Its abundance is 5649462704

Bases of 21642089768

• Binary: 10100001001111110000001010100101000₂
• Hexadecimal: 0x509F81528
• Base-36: 9XX53C8

Squares and roots of 21642089768

• 21642089768 squared (21642089768²) is 468380049526170293824
• 21642089768 cubed (21642089768³) is 10136723077385663364193943992832
• The square root of 21642089768 is 147112.5071773301
• The cube root of 21642089768 is 2786.7610468277

Scales and comparisons

• 21,642,089,768 seconds is equal to 688 years, 7 weeks, 6 days, 3 hours, 36 minutes, 8 seconds.
• To count from 1 to 21,642,089,768 would take you about one thousand, three hundred seventy-six 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 21642089768 cubic inches would be around 232.2 feet tall.

Recreational maths with 21642089768

• 21642089768 backwards is 86798024612
• The number of decimal digits it has is: 11
• The sum of 21642089768's digits is 53
• More coming soon!