21221574640

Names of 21221574640

• Cardinal: 21221574640 can be written as Twenty-one billion, two hundred twenty-one million, five hundred seventy-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.122157464 × 10¹⁰

Factors of 21221574640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 195

Divisors of 21221574640

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 17 20 28 34 35 40 49 56 67 68 70 80 85 97 98 112 119 134 136 140 170 194 196 238 245 268 272 280 335 340 343 388 392 469 476 485 490 536 560 595 670 679 680 686 776 784 833 938 952 970 980 1072 1139 1190 1340 1358 1360 1372 1552 1649 1666 1715 1876 1904 1940 1960 2278 2345 2380 2401 2680 2716 2744 3283 3298 3332 3395 3430 3752 3880 3920 4165 4556 4690 4753 4760 4802 5360 5432 5488 5695 5831 6499 6566 6596 6664 6790 6860 7504 7760 7973 8245 8330 9112 9380 9506 9520 9604 10864 11390 11543 11662 12005 12998 13132 13192 13328 13580 13720 15946 16415 16490 16660 18224 18760 19012 19208 22780 22981 23086 23324 23765 24010 25996 26264 26384 27160 27440 29155 31892 32495 32830 32980 33271 33320 37520 38024 38416 39865 40817 45493 45560 45962 46172 46648 47530 48020 51992 52528 54320 55811 57715 58310 63784 64990 65660 65960 66542 66640 76048 79730 80801 81634 90986 91120 91924 92344 93296 95060 96040 103984 110483 111622 114905 115430 116620 127568 129980 131320 131920 133084 159460 160867 161602 163268 166355 181972 183848 184688 190120 192080 204085 220966 223244 227465 229810 230860 232897 233240 259960 262640 266168 279055 318451 318920 321734 323204 326536 332710 363944 367696 380240 390677 404005 408170 441932 446488 454930 459620 461720 465794 466480 519920 532336 552415 558110 565607 636902 637840 643468 646408 653072 665420 727888 773381 781354 804335 808010 816340 883864 892976 909860 919240 923440 931588 1104830 1116220 1131214 1164485 1273804 1286936 1292816 1330840 1546762 1562708 1592255 1608670 1616020 1632680 1767728 1819720 1838480 1863176 1953385 2209660 2229157 2232440 2262428 2328970 2547608 2573872 2661680 2734739 2828035 3093524 3125416 3184510 3217340 3232040 3265360 3639440 3726352 3866905 3906770 3959249 4419320 4458314 4464880 4524856 4657940 5095216 5413667 5469478 5656070 6187048 6250832 6369020 6434680 6464080 7733810 7813540 7918498 8838640 8916628 9049712 9315880 10827334 10938956 11145785 11312140 12374096 12738040 12869360 13673695 15467620 15604099 15627080 15836996 17833256 18631760 19796245 21654668 21877912 22291570 22624280 25476080 27068335 27347390 30935240 31208198 31254160 31673992 35666512 37895669 39592490 43309336 43755824 44583140 45248560 54136670 54694780 61870480 62416396 63347984 75791338 78020495 79184980 86618672 89166280 108273340 109389560 124832792 151582676 156040990 158369960 178332560 189478345 216546680 218779120 249665584 265269683 303165352 312081980 316739920 378956690 433093360 530539366 606330704 624163960 757913380 1061078732 1248327920 1326348415 1515826760 2122157464 2652696830 3031653520 4244314928 5305393660 10610787320 21221574640
• Sum of all divisors σ(n): 62493312672
• Sum of proper divisors (its aliquot sum) s(n): 41271738032
• 21221574640 is an abundant number, because the sum of its proper divisors (41271738032) is greater than itself. Its abundance is 20050163392

Bases of 21221574640

• Binary: 10011110000111001111000011111110000₂
• Hexadecimal: 0x4F0E787F0
• Base-36: 9QYRZSG

Squares and roots of 21221574640

• 21221574640 squared (21221574640²) is 450355230201091129600
• 21221574640 cubed (21221574640³) is 9557247132226837616248313344000
• The square root of 21221574640 is 145676.2665639121
• The cube root of 21221574640 is 2768.5935437105

Scales and comparisons

• 21,221,574,640 seconds is equal to 674 years, 40 weeks, 4 days, 1 hour, 50 minutes, 40 seconds.
• To count from 1 to 21,221,574,640 would take you about one thousand, three hundred forty-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 21221574640 cubic inches would be around 230.7 feet tall.

Recreational maths with 21221574640

• 21221574640 backwards is 04647512212
• 21221574640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21221574640's digits is 34
• More coming soon!