21959

Names of 21959

• Cardinal: 21959 can be written as Twenty-one thousand, nine hundred fifty-nine.

Scientific notation

• Scientific notation: 2.1959 × 10⁴

Factors of 21959

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 3144

Divisors of 21959

• Number of divisors d(n): 4
• Complete list of divisors:
  1 7 3137 21959
• Sum of all divisors σ(n): 25104
• Sum of proper divisors (its aliquot sum) s(n): 3145
• 21959 is a deficient number, because the sum of its proper divisors (3145) is less than itself. Its deficiency is 18814

Bases of 21959

• Binary: 101010111000111₂
• Hexadecimal: 0x55C7
• Base-36: GXZ

Squares and roots of 21959

• 21959 squared (21959²) is 482197681
• 21959 cubed (21959³) is 10588578877079
• The square root of 21959 is 148.1856943163
• The cube root of 21959 is 28.0029758741

Scales and comparisons

• 21,959 seconds is equal to 6 hours, 5 minutes, 59 seconds.
• To count from 1 to 21,959 would take you about six 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 21959 cubic inches would be around 2.3 feet tall.

Recreational maths with 21959

• 21959 backwards is 95912
• The number of decimal digits it has is: 5
• The sum of 21959's digits is 26
• More coming soon!