15985

Names of 15985

• Cardinal: 15985 can be written as Fifteen thousand, nine hundred eighty-five.

Scientific notation

• Scientific notation: 1.5985 × 10⁴

Factors of 15985

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 167

Divisors of 15985

• Number of divisors d(n): 8
• Complete list of divisors:
  1 5 23 115 139 695 3197 15985
• Sum of all divisors σ(n): 20160
• Sum of proper divisors (its aliquot sum) s(n): 4175
• 15985 is a deficient number, because the sum of its proper divisors (4175) is less than itself. Its deficiency is 11810

Bases of 15985

• Binary: 11111001110001₂
• Hexadecimal: 0x3E71
• Base-36: CC1

Squares and roots of 15985

• 15985 squared (15985²) is 255520225
• 15985 cubed (15985³) is 4084490796625
• The square root of 15985 is 126.4317997975
• The cube root of 15985 is 25.1905440291

Scales and comparisons

• 15,985 seconds is equal to 4 hours, 26 minutes, 25 seconds.
• To count from 1 to 15,985 would take you about four hours.

  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 15985 cubic inches would be around 2.1 feet tall.

Recreational maths with 15985

• 15985 backwards is 58951
• The number of decimal digits it has is: 5
• The sum of 15985's digits is 28
• More coming soon!