13021965

Names of 13021965

• Cardinal: 13021965 can be written as Thirteen million, twenty-one thousand, nine hundred sixty-five.

Scientific notation

• Scientific notation: 1.3021965 × 10⁷

Factors of 13021965

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

Divisors of 13021965

• Number of divisors d(n): 80
• Complete list of divisors:
  1 3 5 9 11 15 27 33 37 45 55 79 81 99 111 135 165 185 237 297 333 395 405 407 495 555 711 869 891 999 1185 1221 1485 1665 2035 2133 2607 2923 2997 3555 3663 4345 4455 4995 6105 6399 7821 8769 10665 10989 13035 14615 14985 18315 23463 26307 31995 32153 32967 39105 43845 54945 70389 78921 96459 117315 131535 160765 164835 236763 289377 351945 394605 482295 868131 1183815 1446885 2604393 4340655 13021965
• Sum of all divisors σ(n): 26484480
• Sum of proper divisors (its aliquot sum) s(n): 13462515
• 13021965 is an abundant number, because the sum of its proper divisors (13462515) is greater than itself. Its abundance is 440550

Bases of 13021965

• Binary: 110001101011001100001101₂
• Hexadecimal: 0xC6B30D
• Base-36: 7R3T9

Squares and roots of 13021965

• 13021965 squared (13021965²) is 169571572461225
• 13021965 cubed (13021965³) is 2208155081585035807125
• The square root of 13021965 is 3608.5959873613
• The cube root of 13021965 is 235.2658226331

Scales and comparisons

• 13,021,965 seconds is equal to 21 weeks, 3 days, 17 hours, 12 minutes, 45 seconds.
• To count from 1 to 13,021,965 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 13021965 cubic inches would be around 19.6 feet tall.

Recreational maths with 13021965

• 13021965 backwards is 56912031
• 13021965 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 13021965's digits is 27
• More coming soon!