21123123840

Names of 21123123840

• Cardinal: 21123123840 can be written as Twenty-one billion, one hundred twenty-three million, one hundred twenty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.112312384 × 10¹⁰

Factors of 21123123840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 150

Divisors of 21123123840

• Number of divisors d(n): 1536
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 19 20 21 24 26 27 28 30 32 35 36 38 39 40 42 45 48 49 52 54 56 57 60 63 64 65 70 72 76 78 80 84 90 91 95 96 98 101 104 105 108 112 114 117 120 126 128 130 133 135 140 144 147 152 156 160 168 171 180 182 189 190 192 195 196 202 208 210 216 224 228 234 240 245 247 252 260 266 270 273 280 285 288 294 303 304 312 315 320 336 342 351 360 364 378 380 384 390 392 399 404 416 420 432 441 448 455 456 468 480 490 494 504 505 513 520 532 540 546 560 570 576 585 588 606 608 624 630 637 640 665 672 684 702 707 720 728 735 741 756 760 780 784 798 808 819 832 840 855 864 882 896 909 910 912 931 936 945 960 980 988 1008 1010 1026 1040 1064 1080 1092 1120 1140 1152 1170 1176 1197 1212 1216 1235 1248 1260 1274 1313 1323 1330 1344 1365 1368 1404 1414 1440 1456 1470 1482 1512 1515 1520 1560 1568 1596 1616 1638 1664 1680 1710 1728 1729 1755 1764 1818 1820 1824 1862 1872 1890 1911 1919 1920 1960 1976 1995 2016 2020 2052 2080 2121 2128 2160 2184 2205 2223 2240 2280 2340 2352 2394 2424 2432 2457 2470 2496 2520 2548 2565 2626 2646 2660 2688 2727 2730 2736 2793 2808 2828 2880 2912 2940 2964 3024 3030 3040 3120 3136 3185 3192 3232 3276 3360 3420 3456 3458 3510 3528 3535 3591 3636 3640 3648 3705 3724 3744 3780 3822 3838 3920 3939 3952 3990 4032 4040 4095 4104 4160 4242 4256 4320 4368 4410 4446 4480 4545 4560 4655 4680 4704 4788 4848 4914 4940 4949 4992 5040 5096 5130 5187 5252 5292 5320 5454 5460 5472 5586 5616 5656 5733 5757 5760 5824 5880 5928 5985 6048 6060 6080 6240 6272 6363 6370 6384 6464 6552 6565 6615 6669 6720 6840 6916 7020 7056 7070 7182 7272 7280 7296 7410 7448 7488 7560 7644 7676 7840 7878 7904 7980 8064 8080 8190 8208 8320 8379 8484 8512 8640 8645 8736 8820 8892 9090 9120 9191 9310 9360 9408 9555 9576 9595 9696 9828 9880 9898 10080 10192 10260 10374 10504 10584 10605 10640 10908 10920 10944 11115 11172 11232 11312 11466 11514 11648 11760 11817 11856 11970 12096 12103 12120 12160 12285 12480 12726 12740 12768 12928 13104 13130 13230 13338 13433 13440 13635 13680 13832 13965 14040 14112 14140 14364 14544 14560 14820 14847 14896 14976 15120 15288 15352 15561 15680 15756 15808 15960 16160 16380 16416 16758 16968 17024 17199 17271 17280 17290 17472 17640 17784 17955 18180 18240 18382 18620 18720 18816 19089 19110 19152 19190 19392 19656 19695 19760 19796 20160 20384 20520 20748 21008 21168 21210 21280 21816 21840 21888 22230 22344 22464 22624 22932 23028 23520 23634 23712 23940 24192 24206 24240 24570 24745 24947 24960 25137 25452 25480 25536 25935 26208 26260 26460 26676 26866 27270 27360 27573 27664 27930 28080 28224 28280 28665 28728 28785 29088 29120 29640 29694 29792 30240 30576 30704 31122 31360 31512 31616 31815 31920 32320 32760 32832 33345 33516 33936 34398 34542 34580 34944 35280 35451 35568 35910 36309 36360 36480 36764 37240 37440 38178 38220 38304 38380 38784 39312 39390 39520 39592 40299 40320 40768 41040 41496 41895 42016 42336 42420 42560 43632 43680 44460 44541 44688 44928 45248 45864 45955 46056 46683 47040 47268 47424 47880 48412 48480 49140 49490 49894 50274 50904 50960 51072 51813 51870 52416 52520 52920 53352 53732 54540 54720 55146 55328 55860 56160 56448 56560 57330 57456 57570 58176 58240 59085 59280 59388 59584 60480 60515 61152 61408 62244 63024 63630 63840 64337 64640 65520 65664 66690 67032 67165 67872 68796 69084 69160 70560 70902 71136 71820 72618 72720 73528 74235 74480 74841 74880 76356 76440 76608 76760 77805 78624 78780 79040 79184 80598 81536 82080 82719 82992 83790 84032 84672 84840 85120 85995 86355 87264 87360 88920 89082 89376 90496 91728 91910 92112 93366 94031 94080 94536 94848 95445 95760 96824 96960 98280 98980 99788 100548 101808 101920 103626 103740 104832 105040 105840 106704 107464 108927 109080 109440 110292 110656 111720 112320 113120 114660 114912 115140 116352 118170 118560 118776 119168 120897 120960 121030 122304 122816 124488 124735 125685 126048 127260 127680 128674 131040 133380 133623 134064 134330 135744 137592 137865 138168 138320 141120 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2993640 3008992 3054240 3088176 3143322 3167360 3193216 3217536 3223920 3267810 3308760 3316032 3319680 3367845 3385116 3474198 3485664 3492580 3529344 3563280 3592368 3626910 3667209 3669120 3684480 3734640 3761240 3781440 3860220 3868704 3872960 3970512 3991520 4021920 4072320 4117568 4145040 4191096 4231395 4268160 4275936 4298560 4357080 4411680 4490460 4513488 4537728 4632264 4647552 4714983 4751040 4789824 4835880 4889612 4963140 4979520 5077674 5146960 5158272 5228496 5238870 5294016 5344920 5362560 5388552 5503680 5526720 5588128 5641860 5672160 5701248 5790330 5803056 5809440 5882240 5975424 5987280 6017984 6108480 6112015 6176352 6286644 6447840 6535620 6617520 6632064 6735690 6770232 6948396 6971328 6985160 7126560 7184736 7253820 7334418 7469280 7522480 7562880 7720440 7737408 7745920 7858305 7941024 7983040 8043840 8235136 8290080 8382192 8462790 8551872 8597120 8685495 8714160 8823360 8980920 9026976 9264528 9429966 9502080 9579648 9671760 9779224 9926280 9959040 10155348 10293920 10456992 10477740 10588032 10689840 10777104 11001627 11007360 11053440 11176256 11283720 11344320 11580660 11606112 11618880 11974560 12035968 12216960 12224030 12352704 12573288 12694185 12895680 13071240 13235040 13471380 13540464 13896792 13942656 13970320 14253120 14369472 14507640 14668836 14938560 15044960 15440880 15474816 15716610 15882048 15966080 16087680 16580160 16764384 16925580 17103744 17370990 17428320 17646720 17961840 18053952 18336045 18529056 18859932 19343520 19558448 19852560 20310696 20587840 20913984 20955480 21379680 21554208 22003254 22352512 22567440 22688640 23161320 23212224 23237760 23574915 23949120 24448060 24705408 25146576 25388370 25791360 26142480 26470080 26942760 27080928 27793584 27940640 28506240 28738944 29015280 29337672 29877120 30089920 30881760 31433220 31764096 33004881 33160320 33528768 33851160 34741980 34856640 35923680 36107904 36672090 37058112 37719864 38687040 39116896 39705120 40621392 41175680 41827968 41910960 42759360 43108416 44006508 45134880 46322640 46424448 47149830 47898240 48896120 50293152 50776740 52284960 52940160 53885520 54161856 55008135 55587168 55881280 58030560 58675344 60179840 61763520 62866440 66009762 67057536 67702320 69483960 69713280 71847360 73344180 74116224 75439728 77374080 78233792 79410240 81242784 83821920 85518720 86216832 88013016 90269760 92645280 94299660 97792240 100586304 101553480 104569920 107771040 108323712 110016270 111174336 111762560 116061120 117350688 123527040 125732880 132019524 135404640 138967920 143694720 146688360 150879456 156467584 158820480 162485568 165024405 167643840 176026032 180539520 185290560 188599320 195584480 201172608 203106960 209139840 215542080 220032540 222348672 232122240 234701376 251465760 264039048 270809280 277935840 293376720 301758912 324971136 330048810 335287680 352052064 370581120 377198640 391168960 406213920 431084160 440065080 469402752 502931520 528078096 541618560 555871680 586753440 603517824 660097620 704104128 754397280 782337920 812427840 880130160 1005863040 1056156192 1111743360 1173506880 1320195240 1408208256 1508794560 1624855680 1760260320 2112312384 2347013760 2640390480 3017589120 3520520640 4224624768 5280780960 7041041280 10561561920 21123123840
• Sum of all divisors σ(n): 99628704000
• Sum of proper divisors (its aliquot sum) s(n): 78505580160
• 21123123840 is an abundant number, because the sum of its proper divisors (78505580160) is greater than itself. Its abundance is 57382456320

Bases of 21123123840

• Binary: 10011101011000010010100101010000000₂
• Hexadecimal: 0x4EB094A80
• Base-36: 9PC5UO0

Squares and roots of 21123123840

• 21123123840 squared (21123123840²) is 446186360759976345600
• 21123123840 cubed (21123123840³) is 9424849754051896863579439104000
• The square root of 21123123840 is 145337.9642075669
• The cube root of 21123123840 is 2764.3055672083

Scales and comparisons

• 21,123,123,840 seconds is equal to 671 years, 33 weeks, 5 days, 14 hours, 24 minutes.
• To count from 1 to 21,123,123,840 would take you about one thousand, three hundred forty-three 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 21123123840 cubic inches would be around 230.4 feet tall.

Recreational maths with 21123123840

• 21123123840 backwards is 04832132112
• 21123123840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21123123840's digits is 27
• More coming soon!