# 28928

## 28,928 is an even composite number composed of two prime numbers multiplied together.

What does the number 28928 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 18 divisors.

28928 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eighteen divisors.

## Prime factorization of 28928:

### 28 × 113

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 113)

See below for interesting mathematical facts about the number 28928 from the Numbermatics database.

### Names of 28928

• Cardinal: 28928 can be written as Twenty-eight thousand, nine hundred twenty-eight.

### Scientific notation

• Scientific notation: 2.8928 × 104

### Factors of 28928

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 115

### Divisors of 28928

• Number of divisors d(n): 18
• Complete list of divisors:
• Sum of all divisors σ(n): 58254
• Sum of proper divisors (its aliquot sum) s(n): 29326
• 28928 is an abundant number, because the sum of its proper divisors (29326) is greater than itself. Its abundance is 398

### Bases of 28928

• Binary: 1110001000000002
• Base-36: MBK

### Squares and roots of 28928

• 28928 squared (289282) is 836829184
• 28928 cubed (289283) is 24207794634752
• The square root of 28928 is 170.0823330037
• The cube root of 28928 is 30.6977211153

### Scales and comparisons

How big is 28928?
• 28,928 seconds is equal to 8 hours, 2 minutes, 8 seconds.
• To count from 1 to 28,928 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 28928 cubic inches would be around 2.6 feet tall.

### Recreational maths with 28928

• 28928 backwards is 82982
• The number of decimal digits it has is: 5
• The sum of 28928's digits is 29
• More coming soon!