# 21296

## 21,296 is an even composite number composed of two prime numbers multiplied together.

What does the number 21296 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 20 divisors.

21296 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of twenty divisors.

## Prime factorization of 21296:

### 24 × 113

(2 × 2 × 2 × 2 × 11 × 11 × 11)

See below for interesting mathematical facts about the number 21296 from the Numbermatics database.

### Names of 21296

• Cardinal: 21296 can be written as Twenty-one thousand, two hundred ninety-six.

### Scientific notation

• Scientific notation: 2.1296 × 104

### Factors of 21296

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 13

### Divisors of 21296

• Number of divisors d(n): 20
• Complete list of divisors:
• Sum of all divisors σ(n): 45384
• Sum of proper divisors (its aliquot sum) s(n): 24088
• 21296 is an abundant number, because the sum of its proper divisors (24088) is greater than itself. Its abundance is 2792

### Bases of 21296

• Binary: 1010011001100002
• Base-36: GFK

### Squares and roots of 21296

• 21296 squared (212962) is 453519616
• 21296 cubed (212963) is 9658153742336
• The square root of 21296 is 145.9314907757
• The cube root of 21296 is 27.7182630979

### Scales and comparisons

How big is 21296?
• 21,296 seconds is equal to 5 hours, 54 minutes, 56 seconds.
• To count from 1 to 21,296 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 21296 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21296

• 21296 backwards is 69212
• The number of decimal digits it has is: 5
• The sum of 21296's digits is 20
• More coming soon!