# 21654

## 21,654 is an even composite number composed of three prime numbers multiplied together.

What does the number 21654 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 16 divisors.

21654 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixteen divisors.

## Prime factorization of 21654:

### 2 × 33 × 401

(2 × 3 × 3 × 3 × 401)

See below for interesting mathematical facts about the number 21654 from the Numbermatics database.

### Names of 21654

• Cardinal: 21654 can be written as Twenty-one thousand, six hundred fifty-four.

### Scientific notation

• Scientific notation: 2.1654 × 104

### Factors of 21654

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 406

### Divisors of 21654

• Number of divisors d(n): 16
• Complete list of divisors:
• Sum of all divisors σ(n): 48240
• Sum of proper divisors (its aliquot sum) s(n): 26586
• 21654 is an abundant number, because the sum of its proper divisors (26586) is greater than itself. Its abundance is 4932

### Bases of 21654

• Binary: 1010100100101102
• Base-36: GPI

### Squares and roots of 21654

• 21654 squared (216542) is 468895716
• 21654 cubed (216543) is 10153467834264
• The square root of 21654 is 147.1529816211
• The cube root of 21654 is 27.8727216329

### Scales and comparisons

How big is 21654?
• 21,654 seconds is equal to 6 hours, 54 seconds.
• To count from 1 to 21,654 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 21654 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21654

• 21654 backwards is 45612
• 21654 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 21654's digits is 18
• More coming soon!