12807438

Names of 12807438

• Cardinal: 12807438 can be written as Twelve million, eight hundred seven thousand, four hundred thirty-eight.

Scientific notation

• Scientific notation: 1.2807438 × 10⁷

Factors of 12807438

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 5072

Divisors of 12807438

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 6 7 14 21 42 61 122 183 366 427 854 1281 2562 4999 9998 14997 29994 34993 69986 104979 209958 304939 609878 914817 1829634 2134573 4269146 6403719 12807438
• Sum of all divisors σ(n): 29760000
• Sum of proper divisors (its aliquot sum) s(n): 16952562
• 12807438 is an abundant number, because the sum of its proper divisors (16952562) is greater than itself. Its abundance is 4145124

Bases of 12807438

• Binary: 110000110110110100001110₂
• Hexadecimal: 0xC36D0E
• Base-36: 7MIA6

Squares and roots of 12807438

• 12807438 squared (12807438²) is 164030468123844
• 12807438 cubed (12807438³) is 2100810050607108351672
• The square root of 12807438 is 3578.7481051339
• The cube root of 12807438 is 233.9667203749

Scales and comparisons

• 12,807,438 seconds is equal to 21 weeks, 1 day, 5 hours, 37 minutes, 18 seconds.
• To count from 1 to 12,807,438 would take you about thirty-one 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 12807438 cubic inches would be around 19.5 feet tall.

Recreational maths with 12807438

• 12807438 backwards is 83470821
• The number of decimal digits it has is: 8
• The sum of 12807438's digits is 33
• More coming soon!