20981376

Names of 20981376

• Cardinal: 20981376 can be written as Twenty million, nine hundred eighty-one thousand, three hundred seventy-six.

Scientific notation

• Scientific notation: 2.0981376 × 10⁷

Factors of 20981376

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 485

Divisors of 20981376

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 64 72 78 96 104 108 117 128 144 156 192 208 216 234 288 312 351 384 416 432 467 468 576 624 702 832 864 934 936 1152 1248 1401 1404 1664 1728 1868 1872 2496 2802 2808 3456 3736 3744 4203 4992 5604 5616 6071 7472 7488 8406 11208 11232 12142 12609 14944 14976 16812 18213 22416 22464 24284 25218 29888 33624 36426 44832 44928 48568 50436 54639 59776 67248 72852 89664 97136 100872 109278 134496 145704 163917 179328 194272 201744 218556 268992 291408 327834 388544 403488 437112 537984 582816 655668 777088 806976 874224 1165632 1311336 1613952 1748448 2331264 2622672 3496896 5245344 6993792 10490688 20981376
• Sum of all divisors σ(n): 66830400
• Sum of proper divisors (its aliquot sum) s(n): 45849024
• 20981376 is an abundant number, because the sum of its proper divisors (45849024) is greater than itself. Its abundance is 24867648

Bases of 20981376

• Binary: 1010000000010011010000000₂
• Hexadecimal: 0x1402680
• Base-36: CHPC0

Squares and roots of 20981376

• 20981376 squared (20981376²) is 440218138853376
• 20981376 cubed (20981376³) is 9236382293302890725376
• The square root of 20981376 is 4580.5431992287
• The cube root of 20981376 is 275.8108344621

Scales and comparisons

• 20,981,376 seconds is equal to 34 weeks, 4 days, 20 hours, 9 minutes, 36 seconds.
• To count from 1 to 20,981,376 would take you about six hours!

  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 20981376 cubic inches would be around 23 feet tall.

Recreational maths with 20981376

• 20981376 backwards is 67318902
• 20981376 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20981376's digits is 36
• More coming soon!