11805

Names of 11805

• Cardinal: 11805 can be written as Eleven thousand, eight hundred five.

Scientific notation

• Scientific notation: 1.1805 × 10⁴

Factors of 11805

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 795

Divisors of 11805

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 5 15 787 2361 3935 11805
• Sum of all divisors σ(n): 18912
• Sum of proper divisors (its aliquot sum) s(n): 7107
• 11805 is a deficient number, because the sum of its proper divisors (7107) is less than itself. Its deficiency is 4698

Bases of 11805

• Binary: 10111000011101₂
• Hexadecimal: 0x2E1D
• Base-36: 93X

Squares and roots of 11805

• 11805 squared (11805²) is 139358025
• 11805 cubed (11805³) is 1645121485125
• The square root of 11805 is 108.6508168401
• The cube root of 11805 is 22.7695962861

Scales and comparisons

• 11,805 seconds is equal to 3 hours, 16 minutes, 45 seconds.
• To count from 1 to 11,805 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 11805 cubic inches would be around 1.9 feet tall.

Recreational maths with 11805

• 11805 backwards is 50811
• 11805 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 11805's digits is 15
• More coming soon!