13218975

Names of 13218975

• Cardinal: 13218975 can be written as Thirteen million, two hundred eighteen thousand, nine hundred seventy-five.

Scientific notation

• Scientific notation: 1.3218975 × 10⁷

Factors of 13218975

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 135

Divisors of 13218975

• Number of divisors d(n): 108
• Complete list of divisors:
  1 3 5 7 9 11 15 21 25 33 35 45 49 55 63 75 77 99 105 109 147 165 175 225 231 245 275 315 327 385 441 495 525 539 545 693 735 763 825 981 1155 1199 1225 1575 1617 1635 1925 2205 2289 2475 2695 2725 3465 3597 3675 3815 4851 4905 5341 5775 5995 6867 8085 8175 8393 10791 11025 11445 13475 16023 17325 17985 19075 24255 24525 25179 26705 29975 34335 40425 41965 48069 53955 57225 58751 75537 80115 89925 121275 125895 133525 171675 176253 209825 240345 269775 293755 377685 400575 528759 629475 881265 1201725 1468775 1888425 2643795 4406325 13218975
• Sum of all divisors σ(n): 30321720
• Sum of proper divisors (its aliquot sum) s(n): 17102745
• 13218975 is an abundant number, because the sum of its proper divisors (17102745) is greater than itself. Its abundance is 3883770

Bases of 13218975

• Binary: 110010011011010010011111₂
• Hexadecimal: 0xC9B49F
• Base-36: 7VBTR

Squares and roots of 13218975

• 13218975 squared (13218975²) is 174741300050625
• 13218975 cubed (13218975³) is 2309900876836710609375
• The square root of 13218975 is 3635.7908355679
• The cube root of 13218975 is 236.4463388423

Scales and comparisons

• 13,218,975 seconds is equal to 21 weeks, 5 days, 23 hours, 56 minutes, 15 seconds.
• To count from 1 to 13,218,975 would take you about thirty-two 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 13218975 cubic inches would be around 19.7 feet tall.

Recreational maths with 13218975

• 13218975 backwards is 57981231
• The number of decimal digits it has is: 8
• The sum of 13218975's digits is 36
• More coming soon!