21868138922520

Names of 21868138922520

• Cardinal: 21868138922520 can be written as Twenty-one trillion, eight hundred sixty-eight billion, one hundred thirty-eight million, nine hundred twenty-two thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.186813892252 × 10¹³

Factors of 21868138922520

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 766222

Divisors of 21868138922520

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 33 40 44 55 60 66 88 97 110 120 132 165 194 220 223 264 291 330 388 440 446 485 582 660 669 776 892 970 1067 1115 1164 1320 1338 1455 1784 1940 2134 2230 2328 2453 2676 2910 3201 3345 3880 4268 4460 4906 5335 5352 5820 6402 6690 7359 8536 8920 9812 10670 11640 12265 12804 13380 14718 16005 19624 21340 21631 24530 25608 26760 29436 32010 36795 42680 43262 49060 58872 64020 64893 73590 86524 98120 108155 128040 129786 147180 173048 216310 237941 259572 294360 324465 432620 475882 519144 648930 713823 765881 865240 951764 1189705 1297860 1427646 1531762 1903528 2297643 2379410 2595720 2855292 3063524 3569115 3829405 4595286 4758820 5710584 6127048 7138230 7658810 8424691 9190572 9517640 11488215 14276460 15317620 16849382 18381144 22976430 25274073 28552920 30635240 33698764 42123455 45952860 50548146 67397528 74290457 84246910 91905720 101096292 126370365 148580914 168493820 170791463 202192584 222871371 252740730 297161828 336987640 341582926 371452285 445742742 505481460 512374389 594323656 683165852 742904570 817195027 853957315 891485484 1010962920 1024748778 1114356855 1366331704 1485809140 1634390054 1707914630 1782970968 1878706093 2049497556 2228713710 2451585081 2561871945 2971618280 3268780108 3415829260 3757412186 4085975135 4098995112 4457427420 4903170162 5123743890 5636118279 6537560216 6831658520 7514824372 8171950270 8914854840 9393530465 9806340324 10247487780 11272236558 12257925405 15029648744 16343900540 16566771911 18787060930 19612680648 20494975560 22544473116 24515850810 28180591395 32687801080 33133543822 37574121860 45088946232 49031701620 49700315733 56361182790 66267087644 75148243720 82833859555 98063403240 99400631466 112722365580 132534175288 165667719110 182234491021 198801262932 225444731160 248501578665 331335438220 364468982042 397602525864 497003157330 546703473063 662670876440 728937964084 911172455105 994006314660 1093406946126 1457875928168 1822344910210 1988012629320 2186813892252 2733517365315 3644689820420 4373627784504 5467034730630 7289379640840 10934069461260 21868138922520
• Sum of all divisors σ(n): 72630611988480
• Sum of proper divisors (its aliquot sum) s(n): 50762473065960
• 21868138922520 is an abundant number, because the sum of its proper divisors (50762473065960) is greater than itself. Its abundance is 28894334143440

Bases of 21868138922520

• Binary: 100111110001110010010101001110000001000011000₂
• Hexadecimal: 0x13E392A70218
• Base-36: 7R231ANFC

Squares and roots of 21868138922520

• 21868138922520 squared (21868138922520²) is 478215499934634186563150400
• 21868138922520 cubed (21868138922520³) is 10457682987472934370979448450192707008000
• The square root of 21868138922520 is 4676338.1959092737
• The cube root of 21868138922520 is 27964.2992799931

Scales and comparisons

• 21,868,138,922,520 seconds is equal to 695,339 years, 9 weeks, 18 hours, 2 minutes.
• To count from 1 to 21,868,138,922,520 would take you about one million, seven hundred thirty-eight thousand, three hundred forty-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 21868138922520 cubic inches would be around 2330.4 feet tall.

Recreational maths with 21868138922520

• 21868138922520 backwards is 02522983186812
• The number of decimal digits it has is: 14
• The sum of 21868138922520's digits is 57
• More coming soon!