# 21200

## 21,200 is an even composite number composed of three prime numbers multiplied together.

What does the number 21200 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 30 divisors.

21200 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of thirty divisors.

## Prime factorization of 21200:

### 24 × 52 × 53

(2 × 2 × 2 × 2 × 5 × 5 × 53)

See below for interesting mathematical facts about the number 21200 from the Numbermatics database.

### Names of 21200

• Cardinal: 21200 can be written as Twenty-one thousand, two hundred.

### Scientific notation

• Scientific notation: 2.12 × 104

### Factors of 21200

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 60

### Divisors of 21200

• Number of divisors d(n): 30
• Complete list of divisors:
• Sum of all divisors σ(n): 51894
• Sum of proper divisors (its aliquot sum) s(n): 30694
• 21200 is an abundant number, because the sum of its proper divisors (30694) is greater than itself. Its abundance is 9494

### Bases of 21200

• Binary: 1010010110100002
• Base-36: GCW

### Squares and roots of 21200

• 21200 squared (212002) is 449440000
• 21200 cubed (212003) is 9528128000000
• The square root of 21200 is 145.6021977857
• The cube root of 21200 is 27.6765500729

### Scales and comparisons

How big is 21200?
• 21,200 seconds is equal to 5 hours, 53 minutes, 20 seconds.
• To count from 1 to 21,200 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 21200 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21200

• 21200 backwards is 00212
• 21200 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 21200's digits is 5
• More coming soon!