# 21675

## 21,675 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21675 look like?

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

21675 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighteen divisors.

## Prime factorization of 21675:

### 3 × 52 × 172

(3 × 5 × 5 × 17 × 17)

See below for interesting mathematical facts about the number 21675 from the Numbermatics database.

### Names of 21675

• Cardinal: 21675 can be written as Twenty-one thousand, six hundred seventy-five.

### Scientific notation

• Scientific notation: 2.1675 × 104

### Factors of 21675

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 25

### Divisors of 21675

• Number of divisors d(n): 18
• Complete list of divisors:
• Sum of all divisors σ(n): 38068
• Sum of proper divisors (its aliquot sum) s(n): 16393
• 21675 is a deficient number, because the sum of its proper divisors (16393) is less than itself. Its deficiency is 5282

### Bases of 21675

• Binary: 1010100101010112
• Base-36: GQ3

### Squares and roots of 21675

• 21675 squared (216752) is 469805625
• 21675 cubed (216753) is 10183036921875
• The square root of 21675 is 147.2243186433
• The cube root of 21675 is 27.8817290223

### Scales and comparisons

How big is 21675?
• 21,675 seconds is equal to 6 hours, 1 minute, 15 seconds.
• To count from 1 to 21,675 would take you about six 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 21675 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21675

• 21675 backwards is 57612
• The number of decimal digits it has is: 5
• The sum of 21675's digits is 21
• More coming soon!