21239831844

Names of 21239831844

• Cardinal: 21239831844 can be written as Twenty-one billion, two hundred thirty-nine million, eight hundred thirty-one thousand, eight hundred forty-four.

Scientific notation

• Scientific notation: 2.1239831844 × 10¹⁰

Factors of 21239831844

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 363

Divisors of 21239831844

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 7 9 11 12 14 18 21 22 28 33 36 42 44 49 63 66 77 84 89 98 99 126 132 147 154 178 196 198 231 251 252 267 294 308 343 356 396 441 462 502 534 539 588 623 686 693 753 801 882 924 979 1004 1029 1068 1078 1246 1372 1386 1506 1602 1617 1757 1764 1869 1958 2058 2156 2259 2401 2492 2761 2772 2937 3012 3087 3204 3234 3514 3738 3773 3916 4116 4361 4518 4802 4851 5271 5522 5607 5874 6174 6468 6853 7028 7203 7476 7546 8283 8722 8811 9036 9604 9702 10542 11044 11214 11319 11748 12299 12348 13083 13706 14406 15092 15813 16566 17444 17622 19327 19404 20559 21084 21609 22339 22428 22638 24598 24849 26166 26411 27412 28812 30527 31626 33132 33957 35244 36897 38654 39249 41118 43218 44678 45276 47971 49196 49698 52332 52822 57981 61054 61677 63252 67017 67914 73794 77308 78498 79233 82236 86093 86436 89356 91581 95942 99396 105644 110691 115962 122108 123354 134034 135289 135828 143913 147588 156373 156996 158466 172186 173943 183162 191884 201051 213689 221382 231924 237699 245729 246708 258279 268068 270578 274743 287826 312746 316932 335797 344372 347886 366324 402102 405867 427378 431739 442764 469119 475398 491458 516558 541156 549486 575652 602651 625492 641067 671594 695772 737187 774837 804204 811734 854756 863478 938238 947023 950796 982916 1007391 1033116 1094611 1098972 1205302 1217601 1282134 1343188 1407357 1474374 1549674 1623468 1720103 1726956 1807953 1876476 1894046 1923201 2014782 2189222 2211561 2350579 2410604 2435202 2564268 2814714 2841069 2948748 3022173 3099348 3283833 3440206 3615906 3788092 3846402 4029564 4378444 4423122 4701158 4870404 5160309 5423859 5629428 5682138 6044346 6567666 6629161 6880412 7051737 7231812 7662277 7692804 8523207 8846244 9402316 9851499 10320618 10847718 11364276 12040721 12088692 13135332 13258322 14103474 15324554 15480927 17046414 19702998 19887483 20641236 21155211 21695436 22986831 24081442 26516644 28206948 30649108 30961854 34092828 36122163 39405996 39774966 42310422 45973662 48162884 53635939 59662449 61923708 68960493 72244326 79549932 84285047 84620844 91947324 107271878 108366489 119324898 137920986 144488652 160907817 168570094 214543756 216732978 238649796 252855141 275841972 321815634 337140188 433465956 482723451 505710282 589995329 643631268 758565423 965446902 1011420564 1179990658 1517130846 1769985987 1930893804 2359981316 3034261692 3539971974 5309957961 7079943948 10619915922 21239831844
• Sum of all divisors σ(n): 69371134560
• Sum of proper divisors (its aliquot sum) s(n): 48131302716
• 21239831844 is an abundant number, because the sum of its proper divisors (48131302716) is greater than itself. Its abundance is 26891470872

Bases of 21239831844

• Binary: 10011110001111111100001110100100100₂
• Hexadecimal: 0x4F1FE1D24
• Base-36: 9R9NB50

Squares and roots of 21239831844

• 21239831844 squared (21239831844²) is 451130456761396440336
• 21239831844 cubed (21239831844³) is 9581935041318973223356818859584
• The square root of 21239831844 is 145738.9167106713
• The cube root of 21239831844 is 2769.3872688001

Scales and comparisons

• 21,239,831,844 seconds is equal to 675 years, 18 weeks, 5 days, 9 hours, 17 minutes, 24 seconds.
• To count from 1 to 21,239,831,844 would take you about one thousand, three hundred fifty 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 21239831844 cubic inches would be around 230.8 feet tall.

Recreational maths with 21239831844

• 21239831844 backwards is 44813893212
• The number of decimal digits it has is: 11
• The sum of 21239831844's digits is 45
• More coming soon!