21083920

Names of 21083920

• Cardinal: 21083920 can be written as Twenty-one million, eighty-three thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.108392 × 10⁷

Factors of 21083920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 147

Divisors of 21083920

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 8 10 11 13 16 19 20 22 26 38 40 44 52 55 65 76 80 88 95 97 104 110 130 143 152 176 190 194 208 209 220 247 260 286 304 380 388 418 440 485 494 520 572 715 760 776 836 880 970 988 1040 1045 1067 1144 1235 1261 1430 1520 1552 1672 1843 1940 1976 2090 2134 2288 2470 2522 2717 2860 3344 3686 3880 3952 4180 4268 4940 5044 5335 5434 5720 6305 7372 7760 8360 8536 9215 9880 10088 10670 10868 11440 12610 13585 13871 14744 16720 17072 18430 19760 20176 20273 21340 21736 23959 25220 27170 27742 29488 36860 40546 42680 43472 47918 50440 54340 55484 69355 73720 81092 85360 95836 100880 101365 108680 110968 119795 138710 147440 162184 191672 202730 217360 221936 239590 263549 277420 324368 383344 405460 479180 527098 554840 810920 958360 1054196 1109680 1317745 1621840 1916720 2108392 2635490 4216784 5270980 10541960 21083920
• Sum of all divisors σ(n): 61246080
• Sum of proper divisors (its aliquot sum) s(n): 40162160
• 21083920 is an abundant number, because the sum of its proper divisors (40162160) is greater than itself. Its abundance is 19078240

Bases of 21083920

• Binary: 1010000011011011100010000₂
• Hexadecimal: 0x141B710
• Base-36: CJWGG

Squares and roots of 21083920

• 21083920 squared (21083920²) is 444531682566400
• 21083920 cubed (21083920³) is 9372470432695372288000
• The square root of 21083920 is 4591.7229881603
• The cube root of 21083920 is 276.2594353977

Scales and comparisons

• 21,083,920 seconds is equal to 34 weeks, 6 days, 38 minutes, 40 seconds.
• To count from 1 to 21,083,920 would take you about two days!

  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 21083920 cubic inches would be around 23 feet tall.

Recreational maths with 21083920

• 21083920 backwards is 02938012
• The number of decimal digits it has is: 8
• The sum of 21083920's digits is 25
• More coming soon!