21533210820

Names of 21533210820

• Cardinal: 21533210820 can be written as Twenty-one billion, five hundred thirty-three million, two hundred ten thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 2.153321082 × 10¹⁰

Factors of 21533210820

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 349

Divisors of 21533210820

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 17 18 20 22 30 33 34 36 44 45 51 55 60 66 68 85 90 99 102 110 121 132 153 165 170 180 187 198 204 220 242 255 289 306 311 330 340 363 374 396 484 495 510 561 578 605 612 622 660 726 748 765 867 933 935 990 1020 1089 1122 1156 1210 1244 1331 1445 1452 1530 1555 1683 1734 1815 1866 1870 1980 2057 2178 2244 2420 2601 2662 2799 2805 2890 3060 3110 3179 3366 3421 3468 3630 3732 3740 3993 4114 4335 4356 4665 5202 5287 5324 5445 5598 5610 5780 6171 6220 6358 6655 6732 6842 7260 7986 8228 8415 8670 9330 9537 10263 10285 10404 10574 10890 11196 11220 11979 12342 12716 13005 13310 13684 13995 15861 15895 15972 16830 17105 17340 18513 18660 19074 19965 20526 20570 21148 21780 22627 23958 24684 26010 26435 26620 27990 28611 30789 30855 31722 31790 33660 34210 34969 37026 37631 38148 39930 41052 41140 45254 47583 47685 47916 51315 52020 52870 55980 57222 58157 59895 61578 61710 63444 63580 67881 68420 69938 74052 75262 79305 79860 89879 90508 92565 95166 95370 102630 104907 105740 112893 113135 114444 116314 119790 123156 123420 135762 139876 143055 150524 153945 158610 174471 174845 179758 185130 188155 190332 190740 203643 205260 209814 225786 226270 232628 237915 239580 269637 271524 286110 290785 307890 314721 317220 338679 339405 348942 349690 359516 370260 376310 384659 407286 413941 419628 449395 451572 452540 475830 523413 524535 539274 564465 572220 581570 615780 629442 639727 677358 678810 697884 699380 752620 769318 808911 814572 827882 872355 898790 951660 988669 1018215 1046826 1049070 1078548 1128930 1153977 1163140 1241823 1258884 1279454 1348185 1354716 1357620 1538636 1573605 1617822 1655764 1693395 1744710 1797580 1919181 1923295 1977338 2036430 2069705 2093652 2098140 2257860 2307954 2483646 2558908 2617065 2696370 2966007 3147210 3198635 3235644 3386790 3461931 3489420 3725469 3838362 3846590 3954676 4044555 4072860 4139410 4615908 4943345 4967292 5234130 5392740 5757543 5769885 5932014 6209115 6294420 6397270 6773580 6923862 7036997 7450938 7676724 7693180 8089110 8278820 8898021 9595905 9886690 10468260 10875359 11515086 11539770 11864028 12418230 12794540 13847724 14073994 14830035 14901876 16178220 17309655 17796042 18627345 19191810 19773380 21110991 21750718 23030172 23079540 24836460 28147988 28787715 29660070 32626077 34619310 35184985 35592084 37254690 38383620 42221982 43501436 44490105 54376795 57575430 59320140 63332973 65252154 69238620 70369970 74509380 84443964 88980210 97878231 105554955 108753590 115150860 119628949 126665946 130504308 140739940 163130385 177960420 195756462 211109910 217507180 239257898 253331892 316664865 326260770 358886847 391512924 422219820 478515796 489391155 598144745 633329730 652521540 717773694 978782310 1076660541 1196289490 1266659460 1435547388 1794434235 1957564620 2153321082 2392578980 3588868470 4306642164 5383302705 7177736940 10766605410 21533210820
• Sum of all divisors σ(n): 76564365696
• Sum of proper divisors (its aliquot sum) s(n): 55031154876
• 21533210820 is an abundant number, because the sum of its proper divisors (55031154876) is greater than itself. Its abundance is 33497944056

Bases of 21533210820

• Binary: 10100000011011110101011100011000100₂
• Hexadecimal: 0x5037AB8C4
• Base-36: 9W4BFT0

Squares and roots of 21533210820

• 21533210820 squared (21533210820²) is 463679168218565072400
• 21533210820 cubed (21533210820³) is 9984501282092605541877763368000
• The square root of 21533210820 is 146741.9872429155
• The cube root of 21533210820 is 2782.0798928861

Scales and comparisons

• 21,533,210,820 seconds is equal to 684 years, 35 weeks, 5 days, 23 hours, 27 minutes.
• To count from 1 to 21,533,210,820 would take you about one thousand, three hundred sixty-nine 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 21533210820 cubic inches would be around 231.8 feet tall.

Recreational maths with 21533210820

• 21533210820 backwards is 02801233512
• The number of decimal digits it has is: 11
• The sum of 21533210820's digits is 27
• More coming soon!