21828493

Names of 21828493

• Cardinal: 21828493 can be written as Twenty-one million, eight hundred twenty-eight thousand, four hundred ninety-three.

Scientific notation

• Scientific notation: 2.1828493 × 10⁷

Factors of 21828493

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 6863

Divisors of 21828493

• Number of divisors d(n): 8
• Complete list of divisors:
  1 17 193 3281 6653 113101 1284029 21828493
• Sum of all divisors σ(n): 23235768
• Sum of proper divisors (its aliquot sum) s(n): 1407275
• 21828493 is a deficient number, because the sum of its proper divisors (1407275) is less than itself. Its deficiency is 20421218

Bases of 21828493

• Binary: 1010011010001001110001101₂
• Hexadecimal: 0x14D138D
• Base-36: CZUZ1

Squares and roots of 21828493

• 21828493 squared (21828493²) is 476483106651049
• 21828493 cubed (21828493³) is 10400908158150676539157
• The square root of 21828493 is 4672.0972806653
• The cube root of 21828493 is 279.4738973087

Scales and comparisons

• 21,828,493 seconds is equal to 36 weeks, 15 hours, 28 minutes, 13 seconds.
• To count from 1 to 21,828,493 would take you about two weeks!

  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 21828493 cubic inches would be around 23.3 feet tall.

Recreational maths with 21828493

• 21828493 backwards is 39482812
• The number of decimal digits it has is: 8
• The sum of 21828493's digits is 37
• More coming soon!