81402

Names of 81402

• Cardinal: 81402 can be written as Eighty-one thousand, four hundred two.

Scientific notation

• Scientific notation: 8.1402 × 10⁴

Factors of 81402

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 13572

Divisors of 81402

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 3 6 13567 27134 40701 81402
• Sum of all divisors σ(n): 162816
• Sum of proper divisors (its aliquot sum) s(n): 81414
• 81402 is an abundant number, because the sum of its proper divisors (81414) is greater than itself. Its abundance is 12

Bases of 81402

• Binary: 10011110111111010₂
• Hexadecimal: 0x13DFA
• Base-36: 1QT6

Squares and roots of 81402

• 81402 squared (81402²) is 6626285604
• 81402 cubed (81402³) is 539392900736808
• The square root of 81402 is 285.3103573303
• The cube root of 81402 is 43.3389473331

Scales and comparisons

• 81,402 seconds is equal to 22 hours, 36 minutes, 42 seconds.
• To count from 1 to 81,402 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 81402 cubic inches would be around 3.6 feet tall.

Recreational maths with 81402

• 81402 backwards is 20418
• The number of decimal digits it has is: 5
• The sum of 81402's digits is 15
• More coming soon!