21459

Names of 21459

• Cardinal: 21459 can be written as Twenty-one thousand, four hundred fifty-nine.

Scientific notation

• Scientific notation: 2.1459 × 10⁴

Factors of 21459

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 337

Divisors of 21459

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 23 69 311 933 7153 21459
• Sum of all divisors σ(n): 29952
• Sum of proper divisors (its aliquot sum) s(n): 8493
• 21459 is a deficient number, because the sum of its proper divisors (8493) is less than itself. Its deficiency is 12966

Bases of 21459

• Binary: 101001111010011₂
• Hexadecimal: 0x53D3
• Base-36: GK3

Squares and roots of 21459

• 21459 squared (21459²) is 460488681
• 21459 cubed (21459³) is 9881626605579
• The square root of 21459 is 146.4889074299
• The cube root of 21459 is 27.7888021425

Scales and comparisons

• 21,459 seconds is equal to 5 hours, 57 minutes, 39 seconds.
• To count from 1 to 21,459 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 21459 cubic inches would be around 2.3 feet tall.

Recreational maths with 21459

• 21459 backwards is 95412
• The number of decimal digits it has is: 5
• The sum of 21459's digits is 21
• More coming soon!