# 21364

## 21,364 is an even composite number composed of three prime numbers multiplied together.

What does the number 21364 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 18 divisors.

21364 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighteen divisors.

## Prime factorization of 21364:

### 22 × 72 × 109

(2 × 2 × 7 × 7 × 109)

See below for interesting mathematical facts about the number 21364 from the Numbermatics database.

### Names of 21364

• Cardinal: 21364 can be written as Twenty-one thousand, three hundred sixty-four.

### Scientific notation

• Scientific notation: 2.1364 × 104

### Factors of 21364

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 118

### Divisors of 21364

• Number of divisors d(n): 18
• Complete list of divisors:
• Sum of all divisors σ(n): 43890
• Sum of proper divisors (its aliquot sum) s(n): 22526
• 21364 is an abundant number, because the sum of its proper divisors (22526) is greater than itself. Its abundance is 1162

### Bases of 21364

• Binary: 1010011011101002
• Base-36: GHG

### Squares and roots of 21364

• 21364 squared (213642) is 456420496
• 21364 cubed (213643) is 9750967476544
• The square root of 21364 is 146.1642911247
• The cube root of 21364 is 27.7477340357

### Scales and comparisons

How big is 21364?
• 21,364 seconds is equal to 5 hours, 56 minutes, 4 seconds.
• To count from 1 to 21,364 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 21364 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21364

• 21364 backwards is 46312
• The number of decimal digits it has is: 5
• The sum of 21364's digits is 16
• More coming soon!