81394

Names of 81394

• Cardinal: 81394 can be written as Eighty-one thousand, three hundred ninety-four.

Scientific notation

• Scientific notation: 8.1394 × 10⁴

Factors of 81394

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 40699

Divisors of 81394

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 40697 81394
• Sum of all divisors σ(n): 122094
• Sum of proper divisors (its aliquot sum) s(n): 40700
• 81394 is a deficient number, because the sum of its proper divisors (40700) is less than itself. Its deficiency is 40694

Bases of 81394

• Binary: 10011110111110010₂
• Hexadecimal: 0x13DF2
• Base-36: 1QSY

Squares and roots of 81394

• 81394 squared (81394²) is 6624983236
• 81394 cubed (81394³) is 539233885510984
• The square root of 81394 is 285.2963371655
• The cube root of 81394 is 43.3375275363

Scales and comparisons

• 81,394 seconds is equal to 22 hours, 36 minutes, 34 seconds.
• To count from 1 to 81,394 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 81394 cubic inches would be around 3.6 feet tall.

Recreational maths with 81394

• 81394 backwards is 49318
• The number of decimal digits it has is: 5
• The sum of 81394's digits is 25
• More coming soon!