21424648

Names of 21424648

• Cardinal: 21424648 can be written as Twenty-one million, four hundred twenty-four thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 2.1424648 × 10⁷

Factors of 21424648

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 382592

Divisors of 21424648

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 4 7 8 14 28 56 382583 765166 1530332 2678081 3060664 5356162 10712324 21424648
• Sum of all divisors σ(n): 45910080
• Sum of proper divisors (its aliquot sum) s(n): 24485432
• 21424648 is an abundant number, because the sum of its proper divisors (24485432) is greater than itself. Its abundance is 3060784

Bases of 21424648

• Binary: 1010001101110101000001000₂
• Hexadecimal: 0x146EA08
• Base-36: CR7D4

Squares and roots of 21424648

• 21424648 squared (21424648²) is 459015541923904
• 21424648 cubed (21424648³) is 9834246412248885985792
• The square root of 21424648 is 4628.6767007429
• The cube root of 21424648 is 277.7396593145

Scales and comparisons

• 21,424,648 seconds is equal to 35 weeks, 2 days, 23 hours, 17 minutes, 28 seconds.
• To count from 1 to 21,424,648 would take you about twenty-two 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 21424648 cubic inches would be around 23.1 feet tall.

Recreational maths with 21424648

• 21424648 backwards is 84642412
• The number of decimal digits it has is: 8
• The sum of 21424648's digits is 31
• More coming soon!