21816790128

Names of 21816790128

• Cardinal: 21816790128 can be written as Twenty-one billion, eight hundred sixteen million, seven hundred ninety thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1816790128 × 10¹⁰

Factors of 21816790128

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2771

Divisors of 21816790128

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 19 21 24 27 28 36 38 42 47 48 54 56 57 63 72 76 81 84 94 108 112 114 126 133 141 144 152 162 168 171 188 189 216 228 252 266 282 304 324 329 336 342 376 378 399 423 432 456 504 513 532 564 567 648 658 684 752 756 798 846 893 912 987 1008 1026 1064 1128 1134 1197 1269 1296 1316 1368 1512 1539 1596 1692 1786 1974 2052 2128 2256 2268 2394 2538 2632 2679 2693 2736 2961 3024 3078 3192 3384 3572 3591 3807 3948 4104 4536 4788 5076 5264 5358 5386 5922 6156 6251 6384 6768 7144 7182 7614 7896 8037 8079 8208 8883 9072 9576 10152 10716 10772 10773 11844 12312 12502 14288 14364 15228 15792 16074 16158 17766 18753 18851 19152 20304 21432 21544 21546 23688 24111 24237 24624 25004 26649 28728 30456 32148 32316 35532 37506 37702 42864 43088 43092 47376 48222 48474 50008 51167 53298 56259 56553 57456 60912 64296 64632 71064 72333 72711 75012 75404 86184 96444 96948 100016 102334 106596 112518 113106 126571 128592 129264 142128 144666 145422 150024 150808 153501 168777 169659 172368 192888 193896 204668 213192 218133 225036 226212 253142 289332 290844 300048 301616 307002 337554 339318 358169 379713 385776 387792 409336 426384 436266 450072 452424 460503 506284 506331 508977 578664 581688 614004 675108 678636 716338 759426 818672 872532 885997 900144 904848 921006 1012568 1012662 1017954 1074507 1139139 1157328 1163376 1228008 1350216 1357272 1381509 1432676 1518852 1526931 1745064 1771994 1842012 2025136 2025324 2035908 2149014 2278278 2404849 2456016 2657991 2700432 2714544 2763018 2865352 3037704 3053862 3223521 3417417 3490128 3543988 3684024 4050648 4071816 4144527 4298028 4556556 4809698 5315982 5526036 5730704 6075408 6107724 6447042 6834834 7087976 7214547 7368048 7973973 8101296 8143632 8289054 8596056 9113112 9619396 9670563 10252251 10631964 11052072 12215448 12894084 13669668 14175952 14429094 15947946 16578108 16833943 17192112 18226224 19238792 19341126 20504502 21263928 21643641 22104144 23921919 24430896 25788168 27339336 28858188 29011689 31895892 33156216 33667886 38477584 38682252 41009004 42527856 43287282 47843838 50501829 51576336 54678672 57716376 58023378 63791784 64930923 66312432 67335772 71765757 77364504 82018008 86574564 95687676 101003658 115432752 116046756 127583568 129861846 134671544 143531514 151505487 154729008 164036016 173149128 191375352 194792769 202007316 232093512 259723692 269343088 287063028 303010974 346298256 382750704 389585538 404014632 454516461 464187024 519447384 574126056 606021948 779171076 808029264 909032922 1038894768 1148252112 1212043896 1363549383 1558342152 1818065844 2424087792 2727098766 3116684304 3636131688 5454197532 7272263376 10908395064 21816790128
• Sum of all divisors σ(n): 77607889920
• Sum of proper divisors (its aliquot sum) s(n): 55791099792
• 21816790128 is an abundant number, because the sum of its proper divisors (55791099792) is greater than itself. Its abundance is 33974309664

Bases of 21816790128

• Binary: 10100010100011000011100110001110000₂
• Hexadecimal: 0x51461CC70
• Base-36: A0T5J00

Squares and roots of 21816790128

• 21816790128 squared (21816790128²) is 475972331489198256384
• 21816790128 cubed (21816790128³) is 10384188462834684058513264177152
• The square root of 21816790128 is 147705.0782065397
• The cube root of 21816790128 is 2794.2394376231

Scales and comparisons

• 21,816,790,128 seconds is equal to 693 years, 36 weeks, 5 days, 3 hours, 28 minutes, 48 seconds.
• To count from 1 to 21,816,790,128 would take you about one thousand, three hundred eighty-seven 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 21816790128 cubic inches would be around 232.9 feet tall.

Recreational maths with 21816790128

• 21816790128 backwards is 82109761812
• The number of decimal digits it has is: 11
• The sum of 21816790128's digits is 45
• More coming soon!