# 28904

## 28,904 is an even composite number composed of two prime numbers multiplied together.

What does the number 28904 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 8 divisors.

28904 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 28904:

### 23 × 3613

(2 × 2 × 2 × 3613)

See below for interesting mathematical facts about the number 28904 from the Numbermatics database.

### Names of 28904

• Cardinal: 28904 can be written as Twenty-eight thousand, nine hundred four.

### Scientific notation

• Scientific notation: 2.8904 × 104

### Factors of 28904

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 3615

### Divisors of 28904

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 54210
• Sum of proper divisors (its aliquot sum) s(n): 25306
• 28904 is a deficient number, because the sum of its proper divisors (25306) is less than itself. Its deficiency is 3598

### Bases of 28904

• Binary: 1110000111010002
• Base-36: MAW

### Squares and roots of 28904

• 28904 squared (289042) is 835441216
• 28904 cubed (289043) is 24147592907264
• The square root of 28904 is 170.0117642989
• The cube root of 28904 is 30.6892293523

### Scales and comparisons

How big is 28904?
• 28,904 seconds is equal to 8 hours, 1 minute, 44 seconds.
• To count from 1 to 28,904 would take you about eight 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 28904 cubic inches would be around 2.6 feet tall.

### Recreational maths with 28904

• 28904 backwards is 40982
• The number of decimal digits it has is: 5
• The sum of 28904's digits is 23
• More coming soon!