81768

Names of 81768

• Cardinal: 81768 can be written as Eighty-one thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 8.1768 × 10⁴

Factors of 81768

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 3412

Divisors of 81768

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 3 4 6 8 12 24 3407 6814 10221 13628 20442 27256 40884 81768
• Sum of all divisors σ(n): 204480
• Sum of proper divisors (its aliquot sum) s(n): 122712
• 81768 is an abundant number, because the sum of its proper divisors (122712) is greater than itself. Its abundance is 40944

Bases of 81768

• Binary: 10011111101101000₂
• Hexadecimal: 0x13F68
• Base-36: 1R3C

Squares and roots of 81768

• 81768 squared (81768²) is 6686005824
• 81768 cubed (81768³) is 546701324216832
• The square root of 81768 is 285.9510447611
• The cube root of 81768 is 43.4038038105

Scales and comparisons

• 81,768 seconds is equal to 22 hours, 42 minutes, 48 seconds.
• To count from 1 to 81,768 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 81768 cubic inches would be around 3.6 feet tall.

Recreational maths with 81768

• 81768 backwards is 86718
• The number of decimal digits it has is: 5
• The sum of 81768's digits is 30
• More coming soon!