13009815

Names of 13009815

• Cardinal: 13009815 can be written as Thirteen million, nine thousand, eight hundred fifteen.

Scientific notation

• Scientific notation: 1.3009815 × 10⁷

Factors of 13009815

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 381

Divisors of 13009815

• Number of divisors d(n): 80
• Complete list of divisors:
  1 3 5 7 9 13 15 21 27 35 39 45 63 65 81 91 105 117 135 189 195 273 315 351 353 405 455 567 585 819 945 1053 1059 1365 1755 1765 2457 2471 2835 3177 4095 4589 5265 5295 7371 7413 9531 12285 12355 13767 15885 22239 22945 28593 32123 36855 37065 41301 47655 66717 68835 96369 111195 123903 142965 160615 200151 206505 289107 333585 371709 481845 619515 867321 1000755 1445535 1858545 2601963 4336605 13009815
• Sum of all divisors σ(n): 28784448
• Sum of proper divisors (its aliquot sum) s(n): 15774633
• 13009815 is an abundant number, because the sum of its proper divisors (15774633) is greater than itself. Its abundance is 2764818

Bases of 13009815

• Binary: 110001101000001110010111₂
• Hexadecimal: 0xC68397
• Base-36: 7QUFR

Squares and roots of 13009815

• 13009815 squared (13009815²) is 169255286334225
• 13009815 cubed (13009815³) is 2201979962980295418375
• The square root of 13009815 is 3606.9121142607
• The cube root of 13009815 is 235.1926291423

Scales and comparisons

• 13,009,815 seconds is equal to 21 weeks, 3 days, 13 hours, 50 minutes, 15 seconds.
• To count from 1 to 13,009,815 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 13009815 cubic inches would be around 19.6 feet tall.

Recreational maths with 13009815

• 13009815 backwards is 51890031
• 13009815 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 13009815's digits is 27
• More coming soon!