21818946240

Names of 21818946240

• Cardinal: 21818946240 can be written as Twenty-one billion, eight hundred eighteen million, nine hundred forty-six thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.181894624 × 10¹⁰

Factors of 21818946240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 27781

Divisors of 21818946240

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 20 21 24 26 27 28 30 32 35 36 39 40 42 45 48 52 54 56 60 63 64 65 70 72 78 80 84 90 91 96 104 105 108 112 117 120 126 130 135 140 144 156 160 168 180 182 189 192 195 208 210 216 224 234 240 252 260 270 273 280 288 312 315 320 336 351 360 364 378 390 416 420 432 448 455 468 480 504 520 540 546 560 576 585 624 630 672 702 720 728 756 780 819 832 840 864 910 936 945 960 1008 1040 1080 1092 1120 1170 1248 1260 1344 1365 1404 1440 1456 1512 1560 1638 1680 1728 1755 1820 1872 1890 2016 2080 2160 2184 2240 2340 2457 2496 2520 2730 2808 2880 2912 3024 3120 3276 3360 3510 3640 3744 3780 4032 4095 4160 4320 4368 4680 4914 5040 5460 5616 5824 6048 6240 6552 6720 7020 7280 7488 7560 8190 8640 8736 9360 9828 10080 10920 11232 12096 12285 12480 13104 14040 14560 15120 16380 17472 18720 19656 20160 21840 22464 24570 26208 27751 28080 29120 30240 32760 37440 39312 43680 49140 52416 55502 56160 60480 65520 78624 83253 87360 98280 111004 112320 131040 138755 157248 166506 194257 196560 222008 249759 262080 277510 333012 360763 388514 393120 416265 444016 499518 555020 582771 666024 721526 749277 777028 786240 832530 888032 971285 999036 1082289 1110040 1165542 1248795 1332048 1443052 1498554 1554056 1665060 1748313 1776064 1803815 1942570 1998072 2164578 2220080 2331084 2497590 2525341 2664096 2886104 2913855 2997108 3108112 3246867 3330120 3496626 3607630 3746385 3885140 3996144 4329156 4440160 4662168 4995180 5050682 5244939 5328192 5411445 5772208 5827710 5994216 6216224 6493734 6660240 6993252 7215260 7492770 7576023 7770280 7992288 8658312 8741565 8880320 9324336 9740601 9990360 10101364 10489878 10822890 11544416 11655420 11988432 12432448 12626705 12987468 13320480 13986504 14430520 14985540 15152046 15540560 15984576 16234335 17316624 17483130 18648672 19481202 19980720 20202728 20979756 21645780 22728069 23088832 23310840 23976864 25253410 25974936 26224695 26640960 27973008 28861040 29971080 30304092 31081120 32468670 34633248 34966260 37297344 37880115 38962404 39961440 40405456 41959512 43291560 45456138 46621680 47953728 48703005 50506820 51949872 52449390 55946016 57722080 59942160 60608184 62162240 64937340 68184207 69266496 69932520 75760230 77924808 79922880 80810912 83919024 86583120 90912276 93243360 97406010 101013640 103899744 104898780 111892032 113640345 115444160 119884320 121216368 129874680 136368414 139865040 151520460 155849616 161621824 167838048 173166240 181824552 186486720 194812020 202027280 207799488 209797560 227280690 239768640 242432736 259749360 272736828 279730080 303040920 311699232 335676096 340921035 346332480 363649104 389624040 404054560 419595120 454561380 484865472 519498720 545473656 559460160 606081840 623398464 681842070 727298208 779248080 808109120 839190240 909122760 1038997440 1090947312 1212163680 1363684140 1454596416 1558496160 1678380480 1818245520 2181894624 2424327360 2727368280 3116992320 3636491040 4363789248 5454736560 7272982080 10909473120 21818946240
• Sum of all divisors σ(n): 94738667520
• Sum of proper divisors (its aliquot sum) s(n): 72919721280
• 21818946240 is an abundant number, because the sum of its proper divisors (72919721280) is greater than itself. Its abundance is 51100775040

Bases of 21818946240

• Binary: 10100010100100000101011001011000000₂
• Hexadecimal: 0x51482B2C0
• Base-36: A0UFQO0

Squares and roots of 21818946240

• 21818946240 squared (21818946240²) is 476066415024010137600
• 21818946240 cubed (21818946240³) is 10387267516078405501509402624000
• The square root of 21818946240 is 147712.3767326219
• The cube root of 21818946240 is 2794.3314843861

Scales and comparisons

• 21,818,946,240 seconds is equal to 693 years, 40 weeks, 2 days, 2 hours, 24 minutes.
• To count from 1 to 21,818,946,240 would take you about one thousand, three hundred eighty-seven 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 21818946240 cubic inches would be around 232.9 feet tall.

Recreational maths with 21818946240

• 21818946240 backwards is 04264981812
• 21818946240 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21818946240's digits is 45
• More coming soon!