20681

Names of 20681

• Cardinal: 20681 can be written as Twenty thousand, six hundred eighty-one.

Scientific notation

• Scientific notation: 2.0681 × 10⁴

Factors of 20681

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 20681

Divisors of 20681

• Number of divisors d(n): 2
• Complete list of divisors:
  1 20681
• Sum of all divisors σ(n): 20682
• Sum of proper divisors (its aliquot sum) s(n): 1
• 20681 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 20680

Bases of 20681

• Binary: 101000011001001₂
• Hexadecimal: 0x50C9
• Base-36: FYH

Squares and roots of 20681

• 20681 squared (20681²) is 427703761
• 20681 cubed (20681³) is 8845341481241
• The square root of 20681 is 143.8089009763
• The cube root of 20681 is 27.4488304673

Scales and comparisons

• 20,681 seconds is equal to 5 hours, 44 minutes, 41 seconds.
• To count from 1 to 20,681 would take you about five 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 20681 cubic inches would be around 2.3 feet tall.

Recreational maths with 20681

• 20681 backwards is 18602
• The number of decimal digits it has is: 5
• The sum of 20681's digits is 17
• More coming soon!