21799

Names of 21799

• Cardinal: 21799 can be written as Twenty-one thousand, seven hundred ninety-nine.

Scientific notation

• Scientific notation: 2.1799 × 10⁴

Factors of 21799

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21799

Divisors of 21799

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21799
• Sum of all divisors σ(n): 21800
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21799 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21798

Bases of 21799

• Binary: 101010100100111₂
• Hexadecimal: 0x5527
• Base-36: GTJ

Squares and roots of 21799

• 21799 squared (21799²) is 475196401
• 21799 cubed (21799³) is 10358806345399
• The square root of 21799 is 147.6448441361
• The cube root of 21799 is 27.9347972619

Scales and comparisons

• 21,799 seconds is equal to 6 hours, 3 minutes, 19 seconds.
• To count from 1 to 21,799 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 21799 cubic inches would be around 2.3 feet tall.

Recreational maths with 21799

• 21799 backwards is 99712
• The number of decimal digits it has is: 5
• The sum of 21799's digits is 28
• More coming soon!