# 21682080

## 21,682,080 is an even composite number composed of five prime numbers multiplied together.

What does the number 21682080 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 240 divisors.

21682080 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred forty divisors.

## Prime factorization of 21682080:

### 25 × 34 × 5 × 7 × 239

(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 7 × 239)

See below for interesting mathematical facts about the number 21682080 from the Numbermatics database.

### Names of 21682080

• Cardinal: 21682080 can be written as Twenty-one million, six hundred eighty-two thousand and eighty.

### Scientific notation

• Scientific notation: 2.168208 × 107

### Factors of 21682080

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 256

### Divisors of 21682080

• Number of divisors d(n): 240
• Complete list of divisors:
• Sum of all divisors σ(n): 87816960
• Sum of proper divisors (its aliquot sum) s(n): 66134880
• 21682080 is an abundant number, because the sum of its proper divisors (66134880) is greater than itself. Its abundance is 44452800

### Bases of 21682080

• Binary: 10100101011010111101000002
• Base-36: CWQ00

### Squares and roots of 21682080

• 21682080 squared (216820802) is 470112593126400
• 21682080 cubed (216820803) is 10193018853174054912000
• The square root of 21682080 is 4656.4020444977
• The cube root of 21682080 is 278.8476448787

### Scales and comparisons

How big is 21682080?
• 21,682,080 seconds is equal to 35 weeks, 5 days, 22 hours, 48 minutes.
• To count from 1 to 21,682,080 would take you about five 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 21682080 cubic inches would be around 23.2 feet tall.

### Recreational maths with 21682080

• 21682080 backwards is 08028612
• 21682080 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21682080's digits is 27
• More coming soon!