# 21269

## 21,269 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 21269 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

21269 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 21269:

### 21269

See below for interesting mathematical facts about the number 21269 from the Numbermatics database.

### Names of 21269

• Cardinal: 21269 can be written as Twenty-one thousand, two hundred sixty-nine.

### Scientific notation

• Scientific notation: 2.1269 × 104

### Factors of 21269

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21269

### Divisors of 21269

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 21270
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21269 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21268

### Bases of 21269

• Binary: 1010011000101012
• Base-36: GET

### Squares and roots of 21269

• 21269 squared (212692) is 452370361
• 21269 cubed (212693) is 9621465208109
• The square root of 21269 is 145.8389522727
• The cube root of 21269 is 27.7065440017

### Scales and comparisons

How big is 21269?
• 21,269 seconds is equal to 5 hours, 54 minutes, 29 seconds.
• To count from 1 to 21,269 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 21269 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21269

• 21269 backwards is 96212
• The number of decimal digits it has is: 5
• The sum of 21269's digits is 20
• More coming soon!