21649807494

Names of 21649807494

• Cardinal: 21649807494 can be written as Twenty-one billion, six hundred forty-nine million, eight hundred seven thousand, four hundred ninety-four.

Scientific notation

• Scientific notation: 2.1649807494 × 10¹⁰

Factors of 21649807494

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 111

Divisors of 21649807494

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 23 27 29 42 46 47 49 54 58 63 69 81 87 94 98 126 138 141 147 161 162 174 189 203 207 243 261 282 294 322 329 378 406 414 423 441 483 486 522 567 609 621 658 667 783 841 846 882 966 987 1081 1127 1134 1218 1242 1269 1323 1334 1363 1421 1449 1566 1682 1701 1827 1863 1974 2001 2162 2254 2303 2349 2523 2538 2646 2726 2842 2898 2961 3243 3381 3402 3654 3726 3807 3969 4002 4089 4263 4347 4606 4669 4698 5046 5481 5589 5887 5922 6003 6486 6762 6909 7047 7567 7569 7614 7938 8178 8526 8694 8883 9338 9541 9729 10143 10962 11178 11421 11774 11907 12006 12267 12789 13041 13818 14007 14094 15134 15138 16443 17661 17766 18009 19082 19343 19458 20286 20727 22701 22707 22842 23814 24534 25578 26082 26649 28014 28623 29187 30429 31349 32683 32886 35322 36018 36801 38367 38686 39123 39527 41209 41454 42021 45402 45414 49329 52969 52983 53298 54027 57246 58029 58374 60858 62181 62698 65366 66787 68103 68121 73602 76734 78246 79054 79947 82418 84042 85869 87561 91287 94047 98049 98658 105938 105966 108054 110403 115101 116058 118581 123627 124362 126063 133574 135401 136206 136242 158907 158949 159894 162081 171738 174087 175122 182574 186543 188094 196098 200361 204309 204363 219443 220806 230202 237162 247254 252126 257607 262683 270802 273861 276689 282141 294147 317814 317898 324162 331209 345303 348174 355743 370881 373086 378189 400722 406203 408618 408726 438886 476721 476847 515214 522261 525366 547722 553378 559629 564282 588294 601083 612927 658329 662418 690606 711486 741762 756378 772821 812406 830067 846423 882441 909121 947807 953442 953694 1044522 1067229 1112643 1119258 1134567 1202166 1218609 1225854 1316658 1430163 1430541 1536101 1545642 1566783 1660134 1692846 1764882 1803249 1818242 1838781 1895614 1936823 1974987 2134458 2225286 2269134 2318463 2437218 2490201 2539269 2647323 2727363 2843421 2860326 2861082 3072202 3133566 3201687 3337929 3606498 3655827 3677562 3873646 3949974 4290489 4608303 4636926 4700349 4980402 5078538 5294646 5409747 5454726 5686842 5810469 5924961 6363847 6403374 6675858 7311654 7470603 7617807 7941969 8182089 8530263 8580978 9216606 9400698 9605061 10013787 10819494 10967481 11620938 11849922 12727694 12871467 13824909 14941206 15235614 15883938 16229241 16364178 17060526 17431407 17774883 19091541 19210122 20027574 21934962 22411809 24546267 25590789 25742934 27649818 32458482 32902443 34862814 35549766 38183082 41474727 44546929 44823618 49092534 51181578 52294221 53324649 57274623 65804886 67235427 73638801 76772367 82949454 89093858 104588442 106649298 114549246 124424181 133640787 134470854 147277602 153544734 156882663 171823869 220916403 230317101 248848362 267281574 313765326 343647738 373272543 400922361 441832806 460634202 470647989 515471607 746545086 801844722 941295978 1030943214 1202767083 1546414821 2405534166 3092829642 3608301249 7216602498 10824903747 21649807494
• Sum of all divisors σ(n): 62455131648
• Sum of proper divisors (its aliquot sum) s(n): 40805324154
• 21649807494 is an abundant number, because the sum of its proper divisors (40805324154) is greater than itself. Its abundance is 19155516660

Bases of 21649807494

• Binary: 10100001010011011011101100010000110₂
• Hexadecimal: 0x50A6DD886
• Base-36: 9Y1QIDI

Squares and roots of 21649807494

• 21649807494 squared (21649807494²) is 468714164527258560036
• 21649807494 cubed (21649807494³) is 10147571431726191340343041709784
• The square root of 21649807494 is 147138.7355321501
• The cube root of 21649807494 is 2787.0922671849

Scales and comparisons

• 21,649,807,494 seconds is equal to 688 years, 20 weeks, 4 days, 11 hours, 24 minutes, 54 seconds.
• To count from 1 to 21,649,807,494 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 21649807494 cubic inches would be around 232.3 feet tall.

Recreational maths with 21649807494

• 21649807494 backwards is 49470894612
• 21649807494 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21649807494's digits is 54
• More coming soon!