21640332672

Names of 21640332672

• Cardinal: 21640332672 can be written as Twenty-one billion, six hundred forty million, three hundred thirty-two thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 2.1640332672 × 10¹⁰

Factors of 21640332672

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 180

Divisors of 21640332672

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 29 32 36 37 41 42 48 56 58 61 63 64 72 74 82 84 87 96 111 112 116 122 123 126 128 144 148 164 168 174 183 192 203 222 224 232 244 246 252 259 261 287 288 296 328 333 336 348 366 369 384 406 427 444 448 464 488 492 504 518 522 549 574 576 592 609 656 666 672 696 732 738 777 812 854 861 888 896 928 976 984 1008 1036 1044 1073 1098 1148 1152 1184 1189 1218 1281 1312 1332 1344 1392 1464 1476 1517 1554 1624 1708 1722 1769 1776 1827 1856 1952 1968 2016 2072 2088 2146 2196 2257 2296 2331 2368 2378 2436 2501 2562 2583 2624 2664 2688 2784 2928 2952 3034 3108 3219 3248 3416 3444 3538 3552 3567 3654 3712 3843 3904 3936 4032 4144 4176 4292 4392 4514 4551 4592 4662 4736 4756 4872 5002 5124 5166 5248 5307 5328 5568 5856 5904 6068 6216 6438 6496 6771 6832 6888 7076 7104 7134 7308 7503 7511 7686 7808 7872 8064 8288 8323 8352 8584 8784 9028 9102 9184 9324 9512 9657 9744 10004 10248 10332 10614 10619 10656 10701 11136 11712 11808 12136 12383 12432 12876 12992 13542 13653 13664 13776 14152 14208 14268 14616 15006 15022 15372 15744 15799 15921 16576 16646 16704 17168 17507 17568 18056 18204 18368 18648 19024 19314 19488 20008 20313 20496 20664 21228 21238 21312 21402 22509 22533 23424 23616 24272 24766 24864 24969 25752 25984 27084 27306 27328 27552 28304 28536 29232 30012 30044 30744 31598 31842 31857 33152 33292 33408 34336 35014 35136 36112 36408 36736 37149 37296 38048 38628 38976 40016 40626 40992 41328 42456 42476 42624 42804 43993 45018 45066 47232 47397 48544 49532 49728 49938 51504 52521 54168 54612 54656 55104 56608 57072 58464 60024 60088 61488 63196 63684 63714 65453 66584 67599 68672 70028 70272 72224 72529 72816 74298 74592 74907 76096 77256 77952 80032 81252 81984 82656 84912 84952 85608 87986 90036 90132 92537 94794 95571 97088 99064 99456 99876 103008 105042 108336 109224 110208 111447 113216 114144 116928 120048 120176 122976 126392 127368 127428 130906 131979 133168 135198 137344 140056 142191 144448 145058 145632 148596 149184 149814 152192 154512 157563 160064 162504 163968 165312 169824 169904 171216 175972 180072 180264 185074 189588 191142 194176 196359 198128 199752 206016 210084 216672 217587 218448 222894 226432 228288 233856 240096 240352 245952 252784 254736 254856 261812 263958 266336 270396 277611 280112 284382 288896 290116 291264 297192 298368 299628 307951 309024 315126 320128 325008 330624 339648 339808 342432 351944 360144 360528 370148 379176 382284 392718 395937 396256 399504 412032 420168 433344 435174 436896 445788 456576 458171 480192 480704 491904 505568 507703 509472 509712 523624 527916 532672 540792 555222 560224 568764 580232 582528 589077 594384 599256 615902 618048 630252 647759 650016 652761 679296 679616 684864 703888 720288 721056 740296 758352 764568 785436 791874 792512 799008 832833 840336 866688 870348 873792 891576 916342 923853 960384 961408 1011136 1015406 1018944 1019424 1047248 1055832 1065344 1081584 1110444 1120448 1137528 1160464 1178154 1188768 1198512 1231804 1236096 1260504 1295518 1300032 1305522 1359232 1369728 1374513 1407776 1440576 1442112 1480592 1516704 1523109 1529136 1570872 1583748 1585024 1598016 1665666 1680672 1740696 1747584 1783152 1832684 1847706 1943277 2022272 2030812 2037888 2038848 2094496 2111664 2163168 2220888 2240896 2275056 2320928 2356308 2377536 2397024 2463608 2521008 2591036 2600064 2611044 2683573 2749026 2771559 2815552 2881152 2884224 2961184 3033408 3046218 3058272 3141744 3167496 3196032 3331332 3361344 3481392 3566304 3665368 3695412 3886554 4061624 4077696 4123539 4188992 4223328 4326336 4441776 4550112 4569327 4641856 4712616 4755072 4794048 4927216 5042016 5182072 5222088 5367146 5498052 5543118 5631104 5829831 5922368 6066816 6092436 6116544 6283488 6334992 6662664 6722688 6962784 7132608 7330736 7390824 7773108 8050719 8123248 8247078 8377984 8446656 8652672 8883552 9100224 9138654 9283712 9425232 9588096 9854432 10084032 10364144 10444176 10734292 10996104 11086236 11659662 11844736 12184872 12233088 12566976 12669984 13325328 13925568 14265216 14661472 14781648 15546216 16101438 16246496 16494156 16893312 17767104 18200448 18277308 18785011 18850464 19708864 20168064 20728288 20888352 21468584 21992208 22172472 23319324 24152157 24369744 25133952 25339968 26650656 27851136 29322944 29563296 31092432 32202876 32492992 32988312 35534208 36554616 37570022 37700928 39417728 41456576 41776704 42937168 43984416 44344944 46638648 48304314 48739488 50679936 53301312 56355033 58645888 59126592 62184864 64405752 64985984 65976624 73109232 75140044 75401856 82913152 83553408 85874336 87968832 88689888 93277296 96608628 97478976 106602624 112710066 118253184 124369728 128811504 131953248 146218464 150280088 169065099 171748672 175937664 177379776 186554592 193217256 194957952 225420132 248739456 257623008 263906496 292436928 300560176 338130198 343497344 354759552 373109184 386434512 450840264 515246016 527812992 584873856 601120352 676260396 746218368 772869024 901680528 1030492032 1202240704 1352520792 1545738048 1803361056 2404481408 2705041584 3091476096 3606722112 5410083168 7213444224 10820166336 21640332672
• Sum of all divisors σ(n): 78726211200
• Sum of proper divisors (its aliquot sum) s(n): 57085878528
• 21640332672 is an abundant number, because the sum of its proper divisors (57085878528) is greater than itself. Its abundance is 35445545856

Bases of 21640332672

• Binary: 10100001001110111010100010110000000₂
• Hexadecimal: 0x509DD4580
• Base-36: 9XW3FK0

Squares and roots of 21640332672

• 21640332672 squared (21640332672²) is 468303998154830659584
• 21640332672 cubed (21640332672³) is 10134254311698209637222945128448
• The square root of 21640332672 is 147106.5351097633
• The cube root of 21640332672 is 2786.6856268281

Scales and comparisons

• 21,640,332,672 seconds is equal to 688 years, 4 weeks, 6 days, 19 hours, 31 minutes, 12 seconds.
• To count from 1 to 21,640,332,672 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 21640332672 cubic inches would be around 232.2 feet tall.

Recreational maths with 21640332672

• 21640332672 backwards is 27623304612
• 21640332672 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21640332672's digits is 36
• More coming soon!