81830

Names of 81830

• Cardinal: 81830 can be written as Eighty-one thousand, eight hundred thirty.

Scientific notation

• Scientific notation: 8.183 × 10⁴

Factors of 81830

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 181

Divisors of 81830

• Number of divisors d(n): 24
• Complete list of divisors:
  1 2 5 7 10 14 35 49 70 98 167 245 334 490 835 1169 1670 2338 5845 8183 11690 16366 40915 81830
• Sum of all divisors σ(n): 172368
• Sum of proper divisors (its aliquot sum) s(n): 90538
• 81830 is an abundant number, because the sum of its proper divisors (90538) is greater than itself. Its abundance is 8708

Bases of 81830

• Binary: 10011111110100110₂
• Hexadecimal: 0x13FA6
• Base-36: 1R52

Squares and roots of 81830

• 81830 squared (81830²) is 6696148900
• 81830 cubed (81830³) is 547945864487000
• The square root of 81830 is 286.0594343837
• The cube root of 81830 is 43.4147712467

Scales and comparisons

• 81,830 seconds is equal to 22 hours, 43 minutes, 50 seconds.
• To count from 1 to 81,830 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 81830 cubic inches would be around 3.6 feet tall.

Recreational maths with 81830

• 81830 backwards is 03818
• The number of decimal digits it has is: 5
• The sum of 81830's digits is 20
• More coming soon!