11987

Names of 11987

• Cardinal: 11987 can be written as Eleven thousand, nine hundred eighty-seven.

Scientific notation

• Scientific notation: 1.1987 × 10⁴

Factors of 11987

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 11987

Divisors of 11987

• Number of divisors d(n): 2
• Complete list of divisors:
  1 11987
• Sum of all divisors σ(n): 11988
• Sum of proper divisors (its aliquot sum) s(n): 1
• 11987 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 11986

Bases of 11987

• Binary: 10111011010011₂
• Hexadecimal: 0x2ED3
• Base-36: 98Z

Squares and roots of 11987

• 11987 squared (11987²) is 143688169
• 11987 cubed (11987³) is 1722390081803
• The square root of 11987 is 109.4851588115
• The cube root of 11987 is 22.8860144831

Scales and comparisons

• 11,987 seconds is equal to 3 hours, 19 minutes, 47 seconds.
• To count from 1 to 11,987 would take you about three 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 11987 cubic inches would be around 1.9 feet tall.

Recreational maths with 11987

• 11987 backwards is 78911
• The number of decimal digits it has is: 5
• The sum of 11987's digits is 26
• More coming soon!