21078849792

Names of 21078849792

• Cardinal: 21078849792 can be written as Twenty-one billion, seventy-eight million, eight hundred forty-nine thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 2.1078849792 × 10¹⁰

Factors of 21078849792

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 3953

Divisors of 21078849792

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 7 8 11 12 13 14 16 21 22 24 26 28 32 33 39 42 44 48 49 52 56 64 66 77 78 84 88 91 96 98 104 112 128 132 143 147 154 156 168 176 182 192 196 208 224 231 256 264 273 286 294 308 312 336 352 364 384 392 416 429 448 462 528 539 546 572 588 616 624 637 672 704 728 768 784 832 858 896 924 1001 1056 1078 1092 1144 1176 1232 1248 1274 1344 1408 1456 1568 1617 1664 1716 1792 1848 1911 2002 2112 2156 2184 2288 2352 2464 2496 2548 2688 2816 2912 3003 3136 3234 3328 3432 3696 3822 3917 4004 4224 4312 4368 4576 4704 4928 4992 5096 5376 5824 6006 6272 6468 6864 7007 7392 7644 7834 8008 8448 8624 8736 9152 9408 9856 9984 10192 11648 11751 12012 12544 12936 13728 14014 14784 15288 15668 16016 17248 17472 18304 18816 19712 20384 21021 23296 23502 24024 25872 27419 27456 28028 29568 30576 31336 32032 34496 34944 36608 37632 40768 42042 43087 47004 48048 50921 51744 54838 54912 56056 59136 61152 62672 64064 68992 69888 81536 82257 84084 86174 94008 96096 101842 103488 109676 109824 112112 122304 125344 128128 129261 137984 152763 163072 164514 168168 172348 188016 191933 192192 203684 206976 219352 224224 244608 250688 256256 258522 301609 305526 329028 336336 344696 356447 376032 383866 384384 407368 413952 438704 448448 489216 501376 517044 560131 575799 603218 611052 658056 672672 689392 712894 752064 767732 768768 814736 877408 896896 904827 1002752 1034088 1069341 1120262 1151598 1206436 1222104 1316112 1345344 1378784 1425788 1504128 1535464 1629472 1680393 1754816 1793792 1809654 2068176 2111263 2138682 2240524 2303196 2412872 2444208 2495129 2632224 2690688 2757568 2851576 3008256 3070928 3258944 3360786 3509632 3619308 3920917 4136352 4222526 4277364 4481048 4606392 4825744 4888416 4990258 5264448 5381376 5515136 5703152 6141856 6333789 6517888 6721572 7019264 7238616 7485387 7841834 8272704 8445052 8554728 8962096 9212784 9651488 9776832 9980516 10528896 11030272 11406304 11762751 12283712 12667578 13035776 13443144 14477232 14970774 15683668 16545408 16890104 17109456 17924192 18425568 19302976 19553664 19961032 21057792 22812608 23525502 24567424 25335156 26886288 27446419 28954464 29941548 31367336 33090816 33780208 34218912 35848384 36851136 38605952 39107328 39922064 45625216 47051004 49134848 50670312 53772576 54892838 57908928 59883096 62734672 67560416 68437824 71696768 73702272 77211904 79844128 82339257 91250432 94102008 101340624 107545152 109785676 115817856 119766192 125469344 135120832 136875648 143393536 147404544 159688256 164678514 188204016 202681248 215090304 219571352 231635712 239532384 250938688 270241664 273751296 319376512 329357028 376408032 405362496 430180608 439142704 479064768 501877376 540483328 638753024 658714056 752816064 810724992 878285408 958129536 1003754752 1317428112 1505632128 1621449984 1756570816 1916259072 2634856224 3011264256 3513141632 5269712448 7026283264 10539424896 21078849792
• Sum of all divisors σ(n): 76688361792
• Sum of proper divisors (its aliquot sum) s(n): 55609512000
• 21078849792 is an abundant number, because the sum of its proper divisors (55609512000) is greater than itself. Its abundance is 34530662208

Bases of 21078849792

• Binary: 10011101000011001011011100100000000₂
• Hexadecimal: 0x4E865B900
• Base-36: 9OLSWLC

Squares and roots of 21078849792

• 21078849792 squared (21078849792²) is 444317908553698443264
• 21078849792 cubed (21078849792³) is 9365710454299001451626090201088
• The square root of 21078849792 is 145185.5701920823
• The cube root of 21078849792 is 2762.3728889787

Scales and comparisons

• 21,078,849,792 seconds is equal to 670 years, 12 weeks, 4 days, 4 hours, 3 minutes, 12 seconds.
• To count from 1 to 21,078,849,792 would take you about one thousand, three hundred forty 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 21078849792 cubic inches would be around 230.2 feet tall.

Recreational maths with 21078849792

• 21078849792 backwards is 29794887012
• The number of decimal digits it has is: 11
• The sum of 21078849792's digits is 57
• More coming soon!