# 21188638460

## 21,188,638,460 is an even composite number composed of six prime numbers multiplied together.

What does the number 21188638460 look like?

This visualization shows the relationship between its 6 prime factors (large circles) and 96 divisors.

21188638460 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.

## Prime factorization of 21188638460:

### 22 × 5 × 11 × 41 × 1187 × 1979

(2 × 2 × 5 × 11 × 41 × 1187 × 1979)

See below for interesting mathematical facts about the number 21188638460 from the Numbermatics database.

### Names of 21188638460

• Cardinal: 21188638460 can be written as Twenty-one billion, one hundred eighty-eight million, six hundred thirty-eight thousand, four hundred sixty.

### Scientific notation

• Scientific notation: 2.118863846 × 1010

### Factors of 21188638460

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3225

### Divisors of 21188638460

• Number of divisors d(n): 96
• Complete list of divisors:
• Sum of all divisors σ(n): 49792216320
• Sum of proper divisors (its aliquot sum) s(n): 28603577860
• 21188638460 is an abundant number, because the sum of its proper divisors (28603577860) is greater than itself. Its abundance is 7414939400

### Bases of 21188638460

• Binary: 100111011101111000011110110111111002
• Base-36: 9QF622K

### Squares and roots of 21188638460

• 21188638460 squared (211886384602) is 448958399788591171600
• 21188638460 cubed (211886384603) is 9512817216700598767780219736000
• The square root of 21188638460 is 145563.1768683275
• The cube root of 21188638460 is 2767.1605034829

### Scales and comparisons

How big is 21188638460?
• 21,188,638,460 seconds is equal to 673 years, 38 weeks, 20 hours, 54 minutes, 20 seconds.
• To count from 1 to 21,188,638,460 would take you about one thousand, three hundred forty-seven years!

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 21188638460 cubic inches would be around 230.6 feet tall.

### Recreational maths with 21188638460

• 21188638460 backwards is 06483688112
• The number of decimal digits it has is: 11
• The sum of 21188638460's digits is 47
• More coming soon!