# 21392

## 21,392 is an even composite number composed of three prime numbers multiplied together.

What does the number 21392 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

21392 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

## Prime factorization of 21392:

### 24 × 7 × 191

(2 × 2 × 2 × 2 × 7 × 191)

See below for interesting mathematical facts about the number 21392 from the Numbermatics database.

### Names of 21392

• Cardinal: 21392 can be written as Twenty-one thousand, three hundred ninety-two.

### Scientific notation

• Scientific notation: 2.1392 × 104

### Factors of 21392

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 200

### Divisors of 21392

• Number of divisors d(n): 20
• Complete list of divisors:
• Sum of all divisors σ(n): 47616
• Sum of proper divisors (its aliquot sum) s(n): 26224
• 21392 is an abundant number, because the sum of its proper divisors (26224) is greater than itself. Its abundance is 4832

### Bases of 21392

• Binary: 1010011100100002
• Base-36: GI8

### Squares and roots of 21392

• 21392 squared (213922) is 457617664
• 21392 cubed (213923) is 9789357068288
• The square root of 21392 is 146.2600423903
• The cube root of 21392 is 27.7598509517

### Scales and comparisons

How big is 21392?
• 21,392 seconds is equal to 5 hours, 56 minutes, 32 seconds.
• To count from 1 to 21,392 would take you about five 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 21392 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21392

• 21392 backwards is 29312
• The number of decimal digits it has is: 5
• The sum of 21392's digits is 17
• More coming soon!

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"Number 21392 - Facts about the integer". Numbermatics.com. 2022. Web. 13 August 2022.

APA style:
Numbermatics. (2022). Number 21392 - Facts about the integer. Retrieved 13 August 2022, from https://numbermatics.com/n/21392/

Chicago style:
Numbermatics. 2022. "Number 21392 - Facts about the integer". https://numbermatics.com/n/21392/

The information we have on file for 21392 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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