20997912

Names of 20997912

• Cardinal: 20997912 can be written as Twenty million, nine hundred ninety-seven thousand, nine hundred twelve.

Scientific notation

• Scientific notation: 2.0997912 × 10⁷

Factors of 20997912

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 216

Divisors of 20997912

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 12 13 24 26 31 39 52 62 78 93 104 124 156 167 169 186 248 312 334 338 372 403 501 507 668 676 744 806 1002 1014 1209 1336 1352 1612 2004 2028 2171 2418 3224 4008 4056 4342 4836 5177 5239 6513 8684 9672 10354 10478 13026 15531 15717 17368 20708 20956 26052 28223 31062 31434 41416 41912 52104 56446 62124 62868 67301 84669 112892 124248 125736 134602 169338 201903 225784 269204 338676 403806 538408 677352 807612 874913 1615224 1749826 2624739 3499652 5249478 6999304 10498956 20997912
• Sum of all divisors σ(n): 59028480
• Sum of proper divisors (its aliquot sum) s(n): 38030568
• 20997912 is an abundant number, because the sum of its proper divisors (38030568) is greater than itself. Its abundance is 17032656

Bases of 20997912

• Binary: 1010000000110011100011000₂
• Hexadecimal: 0x1406718
• Base-36: CI23C

Squares and roots of 20997912

• 20997912 squared (20997912²) is 440912308359744
• 20997912 cubed (20997912³) is 9258237850654768854528
• The square root of 20997912 is 4582.3478698153
• The cube root of 20997912 is 275.8832734721

Scales and comparisons

• 20,997,912 seconds is equal to 34 weeks, 5 days, 45 minutes, 12 seconds.
• To count from 1 to 20,997,912 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 20997912 cubic inches would be around 23 feet tall.

Recreational maths with 20997912

• 20997912 backwards is 21979902
• 20997912 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20997912's digits is 39
• More coming soon!