15140021

Names of 15140021

• Cardinal: 15140021 can be written as Fifteen million, one hundred forty thousand and twenty-one.

Scientific notation

• Scientific notation: 1.5140021 × 10⁷

Factors of 15140021

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1164630

Divisors of 15140021

• Number of divisors d(n): 4
• Complete list of divisors:
  1 13 1164617 15140021
• Sum of all divisors σ(n): 16304652
• Sum of proper divisors (its aliquot sum) s(n): 1164631
• 15140021 is a deficient number, because the sum of its proper divisors (1164631) is less than itself. Its deficiency is 13975390

Bases of 15140021

• Binary: 111001110000010010110101₂
• Hexadecimal: 0xE704B5
• Base-36: 90I45

Squares and roots of 15140021

• 15140021 squared (15140021²) is 229220235880441
• 15140021 cubed (15140021³) is 3470399184854830229261
• The square root of 15140021 is 3891.0179901923
• The cube root of 15140021 is 247.3862130421

Scales and comparisons

• 15,140,021 seconds is equal to 25 weeks, 5 hours, 33 minutes, 41 seconds.
• To count from 1 to 15,140,021 would take you about thirty-seven 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 15140021 cubic inches would be around 20.6 feet tall.

Recreational maths with 15140021

• 15140021 backwards is 12004151
• The number of decimal digits it has is: 8
• The sum of 15140021's digits is 14
• More coming soon!