21135856560

Names of 21135856560

• Cardinal: 21135856560 can be written as Twenty-one billion, one hundred thirty-five million, eight hundred fifty-six thousand, five hundred sixty.

Scientific notation

• Scientific notation: 2.113585656 × 10¹⁰

Factors of 21135856560

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 227

Divisors of 21135856560

• Number of divisors d(n): 960
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 13 14 15 16 17 20 21 24 26 28 29 30 34 35 39 40 42 48 51 52 56 58 60 65 68 70 78 80 84 85 87 91 102 104 105 112 116 119 120 130 136 140 145 151 156 168 169 170 174 182 195 203 204 208 210 221 232 238 240 255 260 272 273 280 290 302 312 336 338 340 348 357 364 377 390 406 408 420 435 442 453 455 464 476 493 507 510 520 546 560 580 595 604 609 624 663 676 680 696 714 728 754 755 780 812 816 840 845 870 884 906 910 952 986 1014 1015 1020 1040 1057 1092 1105 1131 1160 1183 1190 1208 1218 1326 1352 1360 1365 1392 1428 1456 1479 1508 1510 1547 1560 1624 1680 1690 1740 1768 1785 1812 1820 1885 1904 1963 1972 2028 2030 2040 2114 2184 2210 2262 2265 2320 2366 2380 2416 2436 2465 2535 2567 2639 2652 2704 2730 2856 2873 2958 3016 3020 3045 3094 3120 3171 3248 3315 3380 3451 3480 3536 3549 3570 3624 3640 3770 3926 3944 4056 4060 4080 4228 4368 4379 4420 4524 4530 4641 4732 4760 4872 4901 4930 5070 5134 5278 5285 5304 5460 5655 5712 5746 5889 5915 5916 6032 6040 6090 6188 6342 6409 6630 6760 6902 6960 7098 7140 7248 7280 7395 7540 7701 7735 7852 7888 7917 8112 8120 8456 8619 8758 8840 9048 9060 9282 9464 9520 9744 9802 9815 9860 10140 10268 10353 10556 10570 10608 10920 11310 11492 11778 11830 11832 12080 12180 12376 12684 12818 12835 13137 13195 13260 13520 13741 13804 14196 14280 14365 14703 14790 15080 15402 15470 15704 15834 15855 16240 16912 17238 17255 17516 17680 17745 17969 18096 18120 18564 18928 19227 19604 19630 19720 20111 20280 20536 20706 21112 21140 21840 21895 22620 22984 23205 23556 23660 23664 24360 24505 24752 25368 25519 25636 25670 26274 26390 26520 27482 27608 28392 28560 28730 29406 29445 29580 30160 30653 30804 30940 31408 31668 31710 32045 33371 34307 34476 34510 35032 35490 35938 36240 37128 38454 38505 39208 39260 39440 39585 40222 40560 41072 41223 41412 42224 42280 43095 43790 44863 45240 45968 46410 47112 47320 48720 49010 50736 51038 51272 51340 51765 52548 52780 53040 53907 54964 55216 56784 56927 57460 58812 58890 59160 60333 61306 61608 61880 63336 63420 64090 65685 66742 68614 68705 68952 69020 70064 70980 71876 73515 74256 74443 76557 76908 77010 78416 78520 79170 80444 82446 82824 83317 84560 86190 87580 89726 89845 90480 91959 92820 94224 94640 96135 98020 100113 100555 102076 102544 102680 102921 103530 105096 105560 107814 109928 113854 114920 117624 117780 118320 120666 122612 123216 123760 126672 126840 127595 128180 131370 133484 134589 137228 137410 137904 138040 141960 143752 147030 148886 153114 153265 153816 154020 157040 158340 160888 164892 165648 166634 166855 170781 171535 172380 175160 178633 179452 179690 183918 185640 192270 196040 200226 201110 204152 205360 205842 206115 207060 210192 211120 215628 219856 223329 224315 227708 229840 233597 235248 235560 241332 245224 249951 253680 255190 256360 262740 266968 269178 269535 274456 274820 276080 283920 284635 287504 294060 297772 301665 306228 306530 307632 308040 316680 321776 329784 333268 333710 341562 343070 344760 350320 357266 358904 359380 367836 371280 372215 382785 384540 392080 398489 400452 402220 408304 411684 412230 414120 416585 431256 433823 446658 448630 455416 459795 467194 471120 482664 490448 499902 500565 510380 512720 514605 521101 525480 533936 535899 538356 539070 548912 549640 569270 583219 588120 595544 603330 612456 613060 616080 633360 659568 666536 667420 672945 683124 686140 689520 700791 714532 717808 718760 735672 740051 744430 765570 769080 796978 800904 804440 823368 824460 828240 833170 853905 862512 867646 893165 893316 897260 910832 919590 934388 965328 967759 999804 1001130 1020760 1029210 1042202 1050960 1071798 1076712 1078140 1099280 1116645 1138540 1166438 1167985 1176240 1191088 1195467 1206660 1224912 1226120 1249755 1301469 1333072 1334840 1345890 1366248 1372280 1401582 1429064 1437520 1471344 1480102 1488860 1531140 1538160 1563303 1593956 1601808 1608880 1646736 1648920 1666340 1707810 1735292 1749657 1786330 1786632 1794520 1839180 1868776 1935518 1992445 1999608 2002260 2041520 2058420 2084404 2143596 2153424 2156280 2169115 2220153 2233290 2277080 2332876 2335970 2390934 2413320 2452240 2499510 2602938 2605505 2669680 2679495 2691780 2732496 2744560 2803164 2858128 2903277 2916095 2960204 2977720 3036761 3062280 3126606 3187912 3297840 3332680 3415620 3470584 3499314 3503955 3572660 3573264 3589040 3678360 3700255 3737552 3871036 3984890 3999216 4004520 4116840 4168808 4287192 4312560 4338230 4440306 4466580 4554160 4665752 4671940 4781868 4826640 4838795 4999020 5180357 5205876 5211010 5358990 5383560 5606328 5806554 5832190 5920408 5955440 5977335 6073522 6124560 6253212 6375824 6507345 6665360 6774313 6831240 6941168 6998628 7007910 7145320 7356720 7400510 7742072 7816515 7969780 8009040 8233680 8337616 8574384 8676460 8748285 8880612 8933160 9110283 9331504 9343880 9563736 9677590 9998040 10360714 10411752 10422020 10717980 10767120 11100765 11212656 11613108 11664380 11840816 11954670 12147044 12506424 12580867 13014690 13548626 13662480 13997256 14015820 14290640 14516385 14801020 15183805 15484144 15541071 15633030 15939560 17352920 17496570 17761224 17866320 18220566 18687760 19127472 19355180 19996080 20322939 20721428 20823504 20844040 21435960 22201530 23226216 23328760 23909340 24294088 25012848 25161734 25901785 26029380 27097252 27994512 28031640 29032770 29602040 30367610 31082142 31266060 31879120 33871565 34705840 34993140 35522448 36441132 37742601 38710360 40645878 41442856 41688080 42871920 44403060 45551415 46452432 46657520 47818680 48588176 50323468 51803570 52058760 54194504 56063280 58065540 59204080 60735220 62164284 62532120 62904335 67743130 69986280 72882264 75485202 77420720 77705355 81291756 82885712 88066069 88806120 91102830 95637360 100646936 101614695 103607140 104117520 108389008 116131080 121470440 124328568 125064240 125808670 135486260 139972560 145764528 150970404 155410710 162583512 176132138 177612240 182205660 188713005 201293872 203229390 207214280 232262160 242940880 248657136 251617340 264198207 270972520 301940808 310821420 325167024 352264276 364411320 377426010 406458780 414428560 440330345 503234680 528396414 541945040 603881616 621642840 704528552 728822640 754852020 812917560 880660690 1006469360 1056792828 1243285680 1320991035 1409057104 1509704040 1625835120 1761321380 2113585656 2641982070 3019408080 3522642760 4227171312 5283964140 7045285520 10567928280 21135856560
• Sum of all divisors σ(n): 89402849280
• Sum of proper divisors (its aliquot sum) s(n): 68266992720
• 21135856560 is an abundant number, because the sum of its proper divisors (68266992720) is greater than itself. Its abundance is 47131136160

Bases of 21135856560

• Binary: 10011101011110010111001001110110000₂
• Hexadecimal: 0x4EBCB93B0
• Base-36: 9PJQRAO

Squares and roots of 21135856560

• 21135856560 squared (21135856560²) is 446724432524895033600
• 21135856560 cubed (21135856560³) is 9441903527693580059225980416000
• The square root of 21135856560 is 145381.7614420737
• The cube root of 21135856560 is 2764.8608837309

Scales and comparisons

• 21,135,856,560 seconds is equal to 672 years, 2 weeks, 5 days, 23 hours, 16 minutes.
• To count from 1 to 21,135,856,560 would take you about one thousand, three hundred forty-four 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 21135856560 cubic inches would be around 230.4 feet tall.

Recreational maths with 21135856560

• 21135856560 backwards is 06565853112
• 21135856560 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21135856560's digits is 42
• More coming soon!