21180375840

Names of 21180375840

• Cardinal: 21180375840 can be written as Twenty-one billion, one hundred eighty million, three hundred seventy-five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.118037584 × 10¹⁰

Factors of 21180375840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 668

Divisors of 21180375840

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 43 48 52 60 65 78 80 86 96 104 120 129 130 156 160 172 193 195 208 215 240 258 260 312 344 386 390 409 416 430 480 516 520 559 579 624 645 688 772 780 818 860 965 1032 1040 1118 1158 1227 1248 1290 1376 1544 1560 1636 1677 1720 1930 2045 2064 2080 2236 2316 2454 2509 2580 2795 2895 3088 3120 3272 3354 3440 3860 4090 4128 4472 4632 4908 5018 5160 5317 5590 5790 6135 6176 6240 6544 6708 6880 7527 7720 8180 8299 8385 8944 9264 9816 10036 10320 10634 11180 11580 12270 12545 13088 13416 15054 15440 15951 16360 16598 16770 17587 17888 18528 19632 20072 20640 21268 22360 23160 24540 24897 25090 26585 26832 30108 30880 31902 32720 33196 33540 35174 37635 39264 40144 41495 42536 44720 46320 49080 49794 50180 52761 53170 53664 60216 63804 65440 66392 67080 70348 75270 78937 79755 80288 82990 85072 87935 89440 92640 98160 99588 100360 105522 106340 107887 120432 124485 127608 132784 134160 140696 150540 157874 159510 165980 170144 175870 196320 199176 200720 211044 212680 215774 228631 236811 240864 248970 255216 263805 265568 268320 281392 301080 315748 319020 323661 331960 351740 394685 398352 401440 422088 425360 431548 457262 473622 497940 510432 527610 539435 562784 602160 631496 638040 647322 663920 685893 703480 789370 796704 844176 850720 863096 914524 947244 995880 1026181 1055220 1078870 1143155 1184055 1204320 1262992 1276080 1294644 1327840 1371786 1406960 1578740 1618305 1688352 1726192 1829048 1894488 1991760 2052362 2110440 2157740 2286310 2368110 2525984 2552160 2589288 2743572 2813920 3078543 3157480 3236610 3394291 3429465 3452384 3658096 3788976 3983520 4104724 4220880 4315480 4572620 4736220 5130905 5178576 5487144 6157086 6314960 6473220 6788582 6858930 7316192 7577952 8209448 8441760 8630960 9145240 9472440 10182873 10261810 10357152 10974288 12314172 12629920 12946440 13577164 13717860 15392715 16418896 16971455 17261920 18290480 18944880 20365746 20523620 21948576 24628344 25892880 27154328 27435720 30785430 32837792 33942910 36580960 37889760 40731492 41047240 44125783 49256688 50914365 51785760 54308656 54871440 61570860 67885820 81462984 82094480 88251566 98513376 101828730 108617312 109742880 123141720 132377349 135771640 162925968 164188960 176503132 203657460 220628915 246283440 264754698 271543280 325851936 353006264 407314920 441257830 492566880 529509396 543086560 661886745 706012528 814629840 882515660 1059018792 1323773490 1412025056 1629259680 1765031320 2118037584 2647546980 3530062640 4236075168 5295093960 7060125280 10590187920 21180375840
• Sum of all divisors σ(n): 74082919680
• Sum of proper divisors (its aliquot sum) s(n): 52902543840
• 21180375840 is an abundant number, because the sum of its proper divisors (52902543840) is greater than itself. Its abundance is 31722168000

Bases of 21180375840

• Binary: 10011101110011100101110001100100000₂
• Hexadecimal: 0x4EE72E320
• Base-36: 9QA8YLC

Squares and roots of 21180375840

• 21180375840 squared (21180375840²) is 448608320723655705600
• 21180375840 cubed (21180375840³) is 9501692837878288623368392704000
• The square root of 21180375840 is 145534.7925411653
• The cube root of 21180375840 is 2766.8007671649

Scales and comparisons

• 21,180,375,840 seconds is equal to 673 years, 24 weeks, 3 days, 5 hours, 44 minutes.
• To count from 1 to 21,180,375,840 would take you about one thousand, three hundred forty-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 21180375840 cubic inches would be around 230.6 feet tall.

Recreational maths with 21180375840

• 21180375840 backwards is 04857308112
• 21180375840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21180375840's digits is 39
• More coming soon!