21009928576

Names of 21009928576

• Cardinal: 21009928576 can be written as Twenty-one billion, nine million, nine hundred twenty-eight thousand, five hundred seventy-six.

Scientific notation

• Scientific notation: 2.1009928576 × 10¹⁰

Factors of 21009928576

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 843

Divisors of 21009928576

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 32 52 56 64 91 104 112 128 169 182 208 224 338 364 416 448 676 728 821 832 896 1183 1352 1456 1642 1664 2197 2366 2704 2912 3284 4394 4732 5408 5747 5824 6568 8788 9464 10673 10816 11494 11648 13136 15379 17576 18928 21346 21632 22988 26272 28561 30758 35152 37856 42692 45976 52544 57122 61516 70304 74711 75712 85384 91952 105088 114244 123032 138749 140608 149422 151424 170768 183904 199927 228488 246064 277498 281216 298844 341536 367808 399854 456976 492128 554996 597688 683072 735616 799708 913952 971243 984256 1109992 1195376 1366144 1599416 1803737 1827904 1942486 1968512 2219984 2390752 3198832 3607474 3655808 3884972 4439968 4781504 6397664 7214948 7769944 8879936 9563008 12626159 12795328 14429896 15539888 17759872 23448581 25252318 25590656 28859792 31079776 46897162 50504636 57719584 62159552 93794324 101009272 115439168 124319104 164140067 187588648 202018544 230878336 328280134 375177296 404037088 656560268 750354592 808074176 1313120536 1500709184 1616148352 2626241072 3001418368 5252482144 10504964288 21009928576
• Sum of all divisors σ(n): 51884344080
• Sum of proper divisors (its aliquot sum) s(n): 30874415504
• 21009928576 is an abundant number, because the sum of its proper divisors (30874415504) is greater than itself. Its abundance is 9864486928

Bases of 21009928576

• Binary: 10011100100010010100001000110000000₂
• Hexadecimal: 0x4E44A1180
• Base-36: 9NGRON4

Squares and roots of 21009928576

• 21009928576 squared (21009928576²) is 441417098768621387776
• 21009928576 cubed (21009928576³) is 9274141717353872907159759486976
• The square root of 21009928576 is 144948.0202555385
• The cube root of 21009928576 is 2759.3589045173

Scales and comparisons

• 21,009,928,576 seconds is equal to 668 years, 2 weeks, 4 days, 11 hours, 16 minutes, 16 seconds.
• To count from 1 to 21,009,928,576 would take you about one thousand, three hundred thirty-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 21009928576 cubic inches would be around 229.9 feet tall.

Recreational maths with 21009928576

• 21009928576 backwards is 67582990012
• The number of decimal digits it has is: 11
• The sum of 21009928576's digits is 49
• More coming soon!