21049923

Names of 21049923

• Cardinal: 21049923 can be written as Twenty-one million, forty-nine thousand, nine hundred twenty-three.

Scientific notation

• Scientific notation: 2.1049923 × 10⁷

Factors of 21049923

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 7016644

Divisors of 21049923

• Number of divisors d(n): 4
• Complete list of divisors:
  1 3 7016641 21049923
• Sum of all divisors σ(n): 28066568
• Sum of proper divisors (its aliquot sum) s(n): 7016645
• 21049923 is a deficient number, because the sum of its proper divisors (7016645) is less than itself. Its deficiency is 14033278

Bases of 21049923

• Binary: 1010000010011001001000011₂
• Hexadecimal: 0x1413243
• Base-36: CJ683

Squares and roots of 21049923

• 21049923 squared (21049923²) is 443099258305929
• 21049923 cubed (21049923³) is 9327205268696915893467
• The square root of 21049923 is 4588.0195073691
• The cube root of 21049923 is 276.1108696563

Scales and comparisons

• 21,049,923 seconds is equal to 34 weeks, 5 days, 15 hours, 12 minutes, 3 seconds.
• To count from 1 to 21,049,923 would take you about ten 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 21049923 cubic inches would be around 23 feet tall.

Recreational maths with 21049923

• 21049923 backwards is 32994012
• The number of decimal digits it has is: 8
• The sum of 21049923's digits is 30
• More coming soon!