21405723684240

Names of 21405723684240

• Cardinal: 21405723684240 can be written as Twenty-one trillion, four hundred five billion, seven hundred twenty-three million, six hundred eighty-four thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.140572368424 × 10¹³

Factors of 21405723684240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 3945

Divisors of 21405723684240

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 17 20 21 24 28 30 34 35 40 42 48 49 51 56 60 68 70 80 84 85 98 102 105 112 119 120 136 140 147 168 170 196 204 210 238 240 245 255 272 280 294 336 340 343 357 392 408 420 476 490 510 560 588 595 680 686 714 735 784 816 833 840 952 980 1020 1029 1176 1190 1360 1372 1428 1470 1666 1680 1715 1785 1904 1960 2040 2058 2352 2380 2499 2744 2856 2940 3332 3430 3570 3911 3920 4080 4116 4165 4760 4998 5145 5488 5712 5831 5880 6664 6860 7140 7822 8232 8330 9520 9996 10290 11662 11733 11760 12495 13328 13720 14280 15644 16464 16660 17493 19555 19992 20580 23324 23466 24990 27377 27440 28560 29155 31288 33320 34986 39110 39984 41160 46648 46932 49980 54754 58310 58665 62576 66487 66640 69972 78220 82131 82320 87465 93296 93864 99960 109508 116620 117330 132974 136885 139944 156440 164262 174930 187728 191639 199461 199920 219016 233240 234660 265948 273770 279888 312880 328524 332435 349860 383278 398922 410655 438032 465409 466480 469320 531896 547540 574917 657048 664870 699720 766556 797844 821310 930818 938640 958195 997305 1063792 1095080 1149834 1314096 1329740 1341473 1396227 1399440 1533112 1595688 1642620 1861636 1916390 1994610 2190160 2299668 2327045 2659480 2682946 2792454 2874585 3066224 3191376 3257863 3285240 3723272 3832780 3989220 4024419 4599336 4654090 5318960 5365892 5584908 5749170 6515726 6570480 6707365 6981135 7446544 7665560 7978440 8048838 9198672 9308180 9773589 10731784 11169816 11498340 13031452 13414730 13962270 15295921 15331120 15956880 16097676 16289315 18616360 19547178 20122095 21463568 22339632 22805041 22996680 26062904 26829460 27924540 30591842 32195352 32578630 37232720 39094356 40244190 45610082 45887763 45993360 48867945 52125808 53658920 55849080 61183684 64390704 65157260 68415123 76479605 78188712 80488380 91220164 91775526 97735890 107071447 107317840 111698160 114025205 122367368 130314520 136830246 152959210 156377424 160976760 182440328 183551052 195471780 214142894 228050410 229438815 244734736 260030657 260629040 273660492 305918420 321214341 321953520 342075615 364880656 367102104 390943560 428285788 456100820 458877630 520061314 535357235 547320984 611836840 642428682 684151230 734204208 749500129 780091971 781887120 856571576 912201640 917755260 1040122628 1070714470 1094641968 1223673680 1284857364 1300153285 1368302460 1499000258 1560183942 1606071705 1713143152 1820214599 1824403280 1835510520 2080245256 2141428940 2248500387 2569714728 2600306570 2736604920 2998000516 3120367884 3212143410 3640429198 3671021040 3747500645 3900459855 4160490512 4282857880 4497000774 5139429456 5200613140 5246500903 5460643797 5473209840 5996001032 6240735768 6424286820 7280858396 7495001290 7800919710 8565715760 8994001548 9101072995 10401226280 10493001806 10921287594 11242501935 11992002064 12481471536 12741502193 12848573640 14561716792 14990002580 15601839420 15739502709 17988003096 18202145990 20802452560 20986003612 21842575188 22485003870 25483004386 25697147280 26232504515 27303218985 29123433584 29980005160 31203678840 31479005418 35976006192 36404291980 38224506579 41972007224 43685150376 44970007740 50966008772 52465009030 54606437970 59960010320 62407357680 62958010836 63707510965 72808583960 76449013158 78697513545 83944014448 87370300752 89190515351 89940015480 101932017544 104930018060 109212875940 125916021672 127415021930 145617167920 152898026316 157395027090 178381030702 179880030960 191122532895 203864035088 209860036120 218425751880 251832043344 254830043860 267571546053 305796052632 314790054180 356762061404 382245065790 419720072240 436851503760 445952576755 509660087720 535143092106 611592105264 629580108360 713524122808 764490131580 891905153510 1019320175440 1070286184212 1259160216720 1337857730265 1427048245616 1528980263160 1783810307020 2140572368424 2675715460530 3057960526320 3567620614040 4281144736848 5351430921060 7135241228080 10702861842120 21405723684240
• Sum of all divisors σ(n): 81958145414400
• Sum of proper divisors (its aliquot sum) s(n): 60552421730160
• 21405723684240 is an abundant number, because the sum of its proper divisors (60552421730160) is greater than itself. Its abundance is 39146698045920

Bases of 21405723684240

• Binary: 100110111011111101000100011100110110110010000₂
• Hexadecimal: 0x1377E88E6D90
• Base-36: 7L5NJ7A1C

Squares and roots of 21405723684240

• 21405723684240 squared (21405723684240²) is 458205006446033279224377600
• 21405723684240 cubed (21405723684240³) is 9808209758719196434492492729492929024000
• The square root of 21405723684240 is 4626632.0022495845
• The cube root of 21405723684240 is 27765.7859739341

Scales and comparisons

• 21,405,723,684,240 seconds is equal to 680,635 years, 41 weeks, 4 days, 12 hours, 44 minutes.
• To count from 1 to 21,405,723,684,240 would take you about one million, seven hundred one thousand, five hundred eighty-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 21405723684240 cubic inches would be around 2313.8 feet tall.

Recreational maths with 21405723684240

• 21405723684240 backwards is 04248632750412
• 21405723684240 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21405723684240's digits is 48
• More coming soon!