# 21184

## 21,184 is an even composite number composed of two prime numbers multiplied together.

What does the number 21184 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 14 divisors.

21184 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of fourteen divisors.

## Prime factorization of 21184:

### 26 × 331

(2 × 2 × 2 × 2 × 2 × 2 × 331)

See below for interesting mathematical facts about the number 21184 from the Numbermatics database.

### Names of 21184

• Cardinal: 21184 can be written as Twenty-one thousand, one hundred eighty-four.

### Scientific notation

• Scientific notation: 2.1184 × 104

### Factors of 21184

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 333

### Divisors of 21184

• Number of divisors d(n): 14
• Complete list of divisors:
• Sum of all divisors σ(n): 42164
• Sum of proper divisors (its aliquot sum) s(n): 20980
• 21184 is a deficient number, because the sum of its proper divisors (20980) is less than itself. Its deficiency is 204

### Bases of 21184

• Binary: 1010010110000002
• Base-36: GCG

### Squares and roots of 21184

• 21184 squared (211842) is 448761856
• 21184 cubed (211843) is 9506571157504
• The square root of 21184 is 145.5472431893
• The cube root of 21184 is 27.6695856665

### Scales and comparisons

How big is 21184?
• 21,184 seconds is equal to 5 hours, 53 minutes, 4 seconds.
• To count from 1 to 21,184 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 21184 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21184

• 21184 backwards is 48112
• 21184 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 21184's digits is 16
• More coming soon!