81003

Names of 81003

• Cardinal: 81003 can be written as Eighty-one thousand and three.

Scientific notation

• Scientific notation: 8.1003 × 10⁴

Factors of 81003

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 114

Divisors of 81003

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 13 31 39 67 93 201 403 871 1209 2077 2613 6231 27001 81003
• Sum of all divisors σ(n): 121856
• Sum of proper divisors (its aliquot sum) s(n): 40853
• 81003 is a deficient number, because the sum of its proper divisors (40853) is less than itself. Its deficiency is 40150

Bases of 81003

• Binary: 10011110001101011₂
• Hexadecimal: 0x13C6B
• Base-36: 1QI3

Squares and roots of 81003

• 81003 squared (81003²) is 6561486009
• 81003 cubed (81003³) is 531500051187027
• The square root of 81003 is 284.6102598291
• The cube root of 81003 is 43.2680212691

Scales and comparisons

• 81,003 seconds is equal to 22 hours, 30 minutes, 3 seconds.
• To count from 1 to 81,003 would take you about twenty-two 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 81003 cubic inches would be around 3.6 feet tall.

Recreational maths with 81003

• 81003 backwards is 30018
• The number of decimal digits it has is: 5
• The sum of 81003's digits is 12
• More coming soon!