21451707732

Names of 21451707732

• Cardinal: 21451707732 can be written as Twenty-one billion, four hundred fifty-one million, seven hundred seven thousand, seven hundred thirty-two.

Scientific notation

• Scientific notation: 2.1451707732 × 10¹⁰

Factors of 21451707732

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 14836

Divisors of 21451707732

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 7 12 13 14 21 26 28 31 39 42 43 52 62 78 84 86 91 93 124 129 156 172 182 186 217 258 273 301 364 372 403 434 516 546 559 602 651 806 868 903 1092 1118 1204 1209 1302 1333 1612 1677 1806 2236 2418 2604 2666 2821 3354 3612 3913 3999 4836 5332 5642 6708 7826 7998 8463 9331 11284 11739 14737 15652 15996 16926 17329 18662 23478 27993 29474 33852 34658 37324 44211 46956 51987 55986 58948 69316 88422 103159 103974 111972 121303 176844 191581 206318 207948 242606 309477 363909 383162 412636 456847 485212 574743 618954 633691 727818 766324 913694 1149486 1237908 1267382 1341067 1370541 1455636 1827388 1901073 2298972 2534764 2682134 2741082 3197929 3802146 4023201 4435837 5364268 5482164 5939011 6395858 7604292 8046402 8237983 8871674 9593787 11878022 12791716 13307511 16092804 16475966 17743348 17817033 19187574 19644421 23756044 24713949 26615022 32951932 35634066 38375148 39288842 41573077 49427898 53230044 57665881 58933263 71268132 78577684 83146154 98855796 115331762 117866526 124719231 137510947 166292308 172997643 230663524 235733052 249438462 255377473 275021894 345995286 412532841 498876924 510754946 550043788 691990572 766132419 825065682 1021509892 1532264838 1650131364 1787642311 3064529676 3575284622 5362926933 7150569244 10725853866 21451707732
• Sum of all divisors σ(n): 65075462144
• Sum of proper divisors (its aliquot sum) s(n): 43623754412
• 21451707732 is an abundant number, because the sum of its proper divisors (43623754412) is greater than itself. Its abundance is 22172046680

Bases of 21451707732

• Binary: 10011111110100111110001010101010100₂
• Hexadecimal: 0x4FE9F1554
• Base-36: 9URSJMC

Squares and roots of 21451707732

• 21451707732 squared (21451707732²) is 460175764619148583824
• 21451707732 cubed (21451707732³) is 9871556007959601710874150927168
• The square root of 21451707732 is 146464.0151436523
• The cube root of 21451707732 is 2778.5654025261

Scales and comparisons

• 21,451,707,732 seconds is equal to 682 years, 5 weeks, 15 hours, 42 minutes, 12 seconds.
• To count from 1 to 21,451,707,732 would take you about one thousand, three hundred sixty-four 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 21451707732 cubic inches would be around 231.5 feet tall.

Recreational maths with 21451707732

• 21451707732 backwards is 23770715412
• 21451707732 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21451707732's digits is 39
• More coming soon!