21139110

Names of 21139110

• Cardinal: 21139110 can be written as Twenty-one million, one hundred thirty-nine thousand, one hundred ten.

Scientific notation

• Scientific notation: 2.113911 × 10⁷

Factors of 21139110

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1396

Divisors of 21139110

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 59 90 118 135 177 270 295 354 531 590 885 1062 1327 1593 1770 2654 2655 3186 3981 5310 6635 7962 7965 11943 13270 15930 19905 23886 35829 39810 59715 71658 78293 119430 156586 179145 234879 358290 391465 469758 704637 782930 1174395 1409274 2113911 2348790 3523185 4227822 7046370 10569555 21139110
• Sum of all divisors σ(n): 57369600
• Sum of proper divisors (its aliquot sum) s(n): 36230490
• 21139110 is an abundant number, because the sum of its proper divisors (36230490) is greater than itself. Its abundance is 15091380

Bases of 21139110

• Binary: 1010000101000111010100110₂
• Hexadecimal: 0x1428EA6
• Base-36: CL31I

Squares and roots of 21139110

• 21139110 squared (21139110²) is 446861971592100
• 21139110 cubed (21139110³) is 9446264372302277031000
• The square root of 21139110 is 4597.7287871295
• The cube root of 21139110 is 276.5002741359

Scales and comparisons

• 21,139,110 seconds is equal to 34 weeks, 6 days, 15 hours, 58 minutes, 30 seconds.
• To count from 1 to 21,139,110 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 21139110 cubic inches would be around 23 feet tall.

Recreational maths with 21139110

• 21139110 backwards is 01193112
• 21139110 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21139110's digits is 18
• More coming soon!