86

Names of 86

• Cardinal: 86 can be written as Eighty-six.

Scientific notation

• Scientific notation: 8.6 × 10¹

Factors of 86

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 45

Divisors of 86

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 43 86
• Sum of all divisors σ(n): 132
• Sum of proper divisors (its aliquot sum) s(n): 46
• 86 is a deficient number, because the sum of its proper divisors (46) is less than itself. Its deficiency is 40

Bases of 86

• Binary: 1010110₂
• Hexadecimal: 0x56
• Base-36: 2E

Squares and roots of 86

• 86 squared (86²) is 7396
• 86 cubed (86³) is 636056
• The square root of 86 is 9.2736184955
• The cube root of 86 is 4.4140049625

Scales and comparisons

• 86 seconds is equal to 1 minute, 26 seconds.
• To count from 1 to 86 would take you about forty-three seconds.

  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 86 cubic inches would be around 0.4 feet tall.

Recreational maths with 86

• 86 backwards is 68
• The number of decimal digits it has is: 2
• The sum of 86's digits is 14
• More coming soon!