20856864

Names of 20856864

• Cardinal: 20856864 can be written as Twenty million, eight hundred fifty-six thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.0856864 × 10⁷

Factors of 20856864

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 810

Divisors of 20856864

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 41 42 48 56 82 84 96 112 123 164 168 224 246 287 328 336 492 574 656 672 757 861 984 1148 1312 1514 1722 1968 2271 2296 3028 3444 3936 4542 4592 5299 6056 6888 9084 9184 10598 12112 13776 15897 18168 21196 24224 27552 31037 31794 36336 42392 62074 63588 72672 84784 93111 124148 127176 169568 186222 217259 248296 254352 372444 434518 496592 508704 651777 744888 869036 993184 1303554 1489776 1738072 2607108 2979552 3476144 5214216 6952288 10428432 20856864
• Sum of all divisors σ(n): 64181376
• Sum of proper divisors (its aliquot sum) s(n): 43324512
• 20856864 is an abundant number, because the sum of its proper divisors (43324512) is greater than itself. Its abundance is 22467648

Bases of 20856864

• Binary: 1001111100100000000100000₂
• Hexadecimal: 0x13E4020
• Base-36: CF19C

Squares and roots of 20856864

• 20856864 squared (20856864²) is 435008775914496
• 20856864 cubed (20856864³) is 9072918878055118700544
• The square root of 20856864 is 4566.9315738251
• The cube root of 20856864 is 275.2641604955

Scales and comparisons

• 20,856,864 seconds is equal to 34 weeks, 3 days, 9 hours, 34 minutes, 24 seconds.
• To count from 1 to 20,856,864 would take you about fifty-one weeks!

  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 20856864 cubic inches would be around 22.9 feet tall.

Recreational maths with 20856864

• 20856864 backwards is 46865802
• The number of decimal digits it has is: 8
• The sum of 20856864's digits is 39
• More coming soon!