20997856

Names of 20997856

• Cardinal: 20997856 can be written as Twenty million, nine hundred ninety-seven thousand, eight hundred fifty-six.

Scientific notation

• Scientific notation: 2.0997856 × 10⁷

Factors of 20997856

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 59

Divisors of 20997856

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 8 11 16 17 22 29 32 34 44 58 68 88 116 121 136 176 187 232 242 272 319 352 374 464 484 493 544 638 748 928 968 986 1276 1331 1496 1936 1972 2057 2552 2662 2992 3509 3872 3944 4114 5104 5324 5423 5984 7018 7888 8228 10208 10648 10846 14036 15776 16456 21296 21692 22627 28072 32912 38599 42592 43384 45254 56144 59653 65824 77198 86768 90508 112288 119306 154396 173536 181016 238612 308792 362032 477224 617584 656183 724064 954448 1235168 1312366 1908896 2624732 5249464 10498928 20997856
• Sum of all divisors σ(n): 49805280
• Sum of proper divisors (its aliquot sum) s(n): 28807424
• 20997856 is an abundant number, because the sum of its proper divisors (28807424) is greater than itself. Its abundance is 7809568

Bases of 20997856

• Binary: 1010000000110011011100000₂
• Hexadecimal: 0x14066E0
• Base-36: CI21S

Squares and roots of 20997856

• 20997856 squared (20997856²) is 440909956596736
• 20997856 cubed (20997856³) is 9258163777584512598016
• The square root of 20997856 is 4582.3417594065
• The cube root of 20997856 is 275.8830282179

Scales and comparisons

• 20,997,856 seconds is equal to 34 weeks, 5 days, 44 minutes, 16 seconds.
• To count from 1 to 20,997,856 would take you about thirteen 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 20997856 cubic inches would be around 23 feet tall.

Recreational maths with 20997856

• 20997856 backwards is 65879902
• The number of decimal digits it has is: 8
• The sum of 20997856's digits is 46
• More coming soon!