21104

Names of 21104

• Cardinal: 21104 can be written as Twenty-one thousand, one hundred four.

Scientific notation

• Scientific notation: 2.1104 × 10⁴

Factors of 21104

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 1321

Divisors of 21104

• Number of divisors d(n): 10
• Complete list of divisors:
  1 2 4 8 16 1319 2638 5276 10552 21104
• Sum of all divisors σ(n): 40920
• Sum of proper divisors (its aliquot sum) s(n): 19816
• 21104 is a deficient number, because the sum of its proper divisors (19816) is less than itself. Its deficiency is 1288

Bases of 21104

• Binary: 101001001110000₂
• Hexadecimal: 0x5270
• Base-36: GA8

Squares and roots of 21104

• 21104 squared (21104²) is 445378816
• 21104 cubed (21104³) is 9399274532864
• The square root of 21104 is 145.2721583787
• The cube root of 21104 is 27.6347109311

Scales and comparisons

• 21,104 seconds is equal to 5 hours, 51 minutes, 44 seconds.
• To count from 1 to 21,104 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 21104 cubic inches would be around 2.3 feet tall.

Recreational maths with 21104

• 21104 backwards is 40112
• 21104 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 21104's digits is 8
• More coming soon!