# 21243690

## 21,243,690 is an even composite number composed of six prime numbers multiplied together.

What does the number 21243690 look like?

This visualization shows the relationship between its 6 prime factors (large circles) and 96 divisors.

21243690 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.

## Prime factorization of 21243690:

### 2 × 32 × 5 × 13 × 67 × 271

(2 × 3 × 3 × 5 × 13 × 67 × 271)

See below for interesting mathematical facts about the number 21243690 from the Numbermatics database.

### Names of 21243690

• Cardinal: 21243690 can be written as Twenty-one million, two hundred forty-three thousand, six hundred ninety.

### Scientific notation

• Scientific notation: 2.124369 × 107

### Factors of 21243690

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 361

### Divisors of 21243690

• Number of divisors d(n): 96
• Complete list of divisors:
• Sum of all divisors σ(n): 60592896
• Sum of proper divisors (its aliquot sum) s(n): 39349206
• 21243690 is an abundant number, because the sum of its proper divisors (39349206) is greater than itself. Its abundance is 18105516

### Bases of 21243690

• Binary: 10100010000100111001010102
• Base-36: CNBQI

### Squares and roots of 21243690

• 21243690 squared (212436902) is 451294364816100
• 21243690 cubed (212436903) is 9587157584900135409000
• The square root of 21243690 is 4609.0877622367
• The cube root of 21243690 is 276.9554942463

### Scales and comparisons

How big is 21243690?
• 21,243,690 seconds is equal to 35 weeks, 21 hours, 1 minute, 30 seconds.
• To count from 1 to 21,243,690 would take you about four 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 21243690 cubic inches would be around 23.1 feet tall.

### Recreational maths with 21243690

• 21243690 backwards is 09634212
• The number of decimal digits it has is: 8
• The sum of 21243690's digits is 27
• More coming soon!

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The information we have on file for 21243690 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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