20081

Names of 20081

• Cardinal: 20081 can be written as Twenty thousand and eighty-one.

Scientific notation

• Scientific notation: 2.0081 × 10⁴

Factors of 20081

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 510

Divisors of 20081

• Number of divisors d(n): 4
• Complete list of divisors:
  1 43 467 20081
• Sum of all divisors σ(n): 20592
• Sum of proper divisors (its aliquot sum) s(n): 511
• 20081 is a deficient number, because the sum of its proper divisors (511) is less than itself. Its deficiency is 19570

Bases of 20081

• Binary: 100111001110001₂
• Hexadecimal: 0x4E71
• Base-36: FHT

Squares and roots of 20081

• 20081 squared (20081²) is 403246561
• 20081 cubed (20081³) is 8097594191441
• The square root of 20081 is 141.7074451113
• The cube root of 20081 is 27.1807714445

Scales and comparisons

• 20,081 seconds is equal to 5 hours, 34 minutes, 41 seconds.
• To count from 1 to 20,081 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 20081 cubic inches would be around 2.3 feet tall.

Recreational maths with 20081

• 20081 backwards is 18002
• The number of decimal digits it has is: 5
• The sum of 20081's digits is 11
• More coming soon!