21108307

Names of 21108307

• Cardinal: 21108307 can be written as Twenty-one million, one hundred eight thousand, three hundred seven.

Scientific notation

• Scientific notation: 2.1108307 × 10⁷

Factors of 21108307

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 5333

Divisors of 21108307

• Number of divisors d(n): 8
• Complete list of divisors:
  1 11 389 4279 4933 54263 1918937 21108307
• Sum of all divisors σ(n): 23091120
• Sum of proper divisors (its aliquot sum) s(n): 1982813
• 21108307 is a deficient number, because the sum of its proper divisors (1982813) is less than itself. Its deficiency is 19125494

Bases of 21108307

• Binary: 1010000100001011001010011₂
• Hexadecimal: 0x1421653
• Base-36: CKF9V

Squares and roots of 21108307

• 21108307 squared (21108307²) is 445560624406249
• 21108307 cubed (21108307³) is 9405030447078796610443
• The square root of 21108307 is 4594.3777598277
• The cube root of 21108307 is 276.3659074229

Scales and comparisons

• 21,108,307 seconds is equal to 34 weeks, 6 days, 7 hours, 25 minutes, 7 seconds.
• To count from 1 to 21,108,307 would take you about two days!

  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 21108307 cubic inches would be around 23 feet tall.

Recreational maths with 21108307

• 21108307 backwards is 70380112
• The number of decimal digits it has is: 8
• The sum of 21108307's digits is 22
• More coming soon!