21791129472

Names of 21791129472

• Cardinal: 21791129472 can be written as Twenty-one billion, seven hundred ninety-one million, one hundred twenty-nine thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1791129472 × 10¹⁰

Factors of 21791129472

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 386051

Divisors of 21791129472

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 49 56 63 64 72 84 96 98 112 126 128 144 147 168 192 196 224 252 288 294 336 384 392 441 448 504 576 588 672 784 882 896 1008 1152 1176 1344 1568 1764 2016 2352 2688 3136 3528 4032 4704 6272 7056 8064 9408 14112 18816 28224 56448 386039 772078 1158117 1544156 2316234 2702273 3088312 3474351 4632468 5404546 6176624 6948702 8106819 9264936 10809092 12353248 13897404 16213638 18529872 18915911 21618184 24320457 24706496 27794808 32427276 37059744 37831822 43236368 48640914 49412992 55589616 56747733 64854552 74119488 75663644 86472736 97281828 111179232 113495466 129709104 148238976 151327288 170243199 172945472 194563656 222358464 226990932 259418208 302654576 340486398 345890944 389127312 444716928 453981864 518836416 605309152 680972796 778254624 907963728 1037672832 1210618304 1361945592 1556509248 1815927456 2421236608 2723891184 3113018496 3631854912 5447782368 7263709824 10895564736 21791129472
• Sum of all divisors σ(n): 72944188200
• Sum of proper divisors (its aliquot sum) s(n): 51153058728
• 21791129472 is an abundant number, because the sum of its proper divisors (51153058728) is greater than itself. Its abundance is 29361929256

Bases of 21791129472

• Binary: 10100010010110110100011111110000000₂
• Hexadecimal: 0x512DA3F80
• Base-36: A0DVJ40

Squares and roots of 21791129472

• 21791129472 squared (21791129472²) is 474853323665466998784
• 21791129472 cubed (21791129472³) is 10347590256203712985845410562048
• The square root of 21791129472 is 147618.1881476669
• The cube root of 21791129472 is 2793.1434904703

Scales and comparisons

• 21,791,129,472 seconds is equal to 692 years, 46 weeks, 2 days, 3 hours, 31 minutes, 12 seconds.
• To count from 1 to 21,791,129,472 would take you about one thousand, three hundred eighty-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 21791129472 cubic inches would be around 232.8 feet tall.

Recreational maths with 21791129472

• 21791129472 backwards is 27492119712
• The number of decimal digits it has is: 11
• The sum of 21791129472's digits is 45
• More coming soon!