# 21086464

## 21,086,464 is an even composite number composed of three prime numbers multiplied together.

What does the number 21086464 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 81 divisors.

21086464 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighty-one divisors.

## Prime factorization of 21086464:

### 28 × 72 × 412

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 41 × 41)

See below for interesting mathematical facts about the number 21086464 from the Numbermatics database.

### Names of 21086464

• Cardinal: 21086464 can be written as Twenty-one million, eighty-six thousand, four hundred sixty-four.

### Scientific notation

• Scientific notation: 2.1086464 × 107

### Factors of 21086464

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 50

### Divisors of 21086464

• Number of divisors d(n): 81
• Complete list of divisors:
• Sum of all divisors σ(n): 50185821
• Sum of proper divisors (its aliquot sum) s(n): 29099357
• 21086464 is an abundant number, because the sum of its proper divisors (29099357) is greater than itself. Its abundance is 8012893

### Bases of 21086464

• Binary: 10100000111000001000000002
• Base-36: CJYF4

### Squares and roots of 21086464

• 21086464 squared (210864642) is 444638964023296
• 21086464 cubed (210864643) is 9375863507874526265344
• 21086464 is a perfect square number. Its square root is 4592
• The cube root of 21086464 is 276.2705461675

### Scales and comparisons

How big is 21086464?
• 21,086,464 seconds is equal to 34 weeks, 6 days, 1 hour, 21 minutes, 4 seconds.
• To count from 1 to 21,086,464 would take you about two days!

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 21086464 cubic inches would be around 23 feet tall.

### Recreational maths with 21086464

• 21086464 backwards is 46468012
• The number of decimal digits it has is: 8
• The sum of 21086464's digits is 31
• More coming soon!