30686

Names of 30686

• Cardinal: 30686 can be written as Thirty thousand, six hundred eighty-six.

Scientific notation

• Scientific notation: 3.0686 × 10⁴

Factors of 30686

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 298

Divisors of 30686

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 67 134 229 458 15343 30686
• Sum of all divisors σ(n): 46920
• Sum of proper divisors (its aliquot sum) s(n): 16234
• 30686 is a deficient number, because the sum of its proper divisors (16234) is less than itself. Its deficiency is 14452

Bases of 30686

• Binary: 111011111011110₂
• Hexadecimal: 0x77DE
• Base-36: NOE

Squares and roots of 30686

• 30686 squared (30686²) is 941630596
• 30686 cubed (30686³) is 28894876468856
• The square root of 30686 is 175.1741990135
• The cube root of 30686 is 31.3073825673

Scales and comparisons

• 30,686 seconds is equal to 8 hours, 31 minutes, 26 seconds.
• To count from 1 to 30,686 would take you about eight 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 30686 cubic inches would be around 2.6 feet tall.

Recreational maths with 30686

• 30686 backwards is 68603
• The number of decimal digits it has is: 5
• The sum of 30686's digits is 23
• More coming soon!