81010

Names of 81010

• Cardinal: 81010 can be written as Eighty-one thousand and ten.

Scientific notation

• Scientific notation: 8.101 × 10⁴

Factors of 81010

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 8108

Divisors of 81010

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 5 10 8101 16202 40505 81010
• Sum of all divisors σ(n): 145836
• Sum of proper divisors (its aliquot sum) s(n): 64826
• 81010 is a deficient number, because the sum of its proper divisors (64826) is less than itself. Its deficiency is 16184

Bases of 81010

• Binary: 10011110001110010₂
• Hexadecimal: 0x13C72
• Base-36: 1QIA

Squares and roots of 81010

• 81010 squared (81010²) is 6562620100
• 81010 cubed (81010³) is 531637854301000
• The square root of 81010 is 284.6225570821
• The cube root of 81010 is 43.2692675909

Scales and comparisons

• 81,010 seconds is equal to 22 hours, 30 minutes, 10 seconds.
• To count from 1 to 81,010 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 81010 cubic inches would be around 3.6 feet tall.

Recreational maths with 81010

• 81010 backwards is 01018
• 81010 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 81010's digits is 10
• More coming soon!