# 28128

## 28,128 is an even composite number composed of three prime numbers multiplied together.

What does the number 28128 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 24 divisors.

28128 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-four divisors.

## Prime factorization of 28128:

### 25 × 3 × 293

(2 × 2 × 2 × 2 × 2 × 3 × 293)

See below for interesting mathematical facts about the number 28128 from the Numbermatics database.

### Names of 28128

• Cardinal: 28128 can be written as Twenty-eight thousand, one hundred twenty-eight.

### Scientific notation

• Scientific notation: 2.8128 × 104

### Factors of 28128

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 298

### Divisors of 28128

• Number of divisors d(n): 24
• Complete list of divisors:
• Sum of all divisors σ(n): 74088
• Sum of proper divisors (its aliquot sum) s(n): 45960
• 28128 is an abundant number, because the sum of its proper divisors (45960) is greater than itself. Its abundance is 17832

### Bases of 28128

• Binary: 1101101111000002
• Base-36: LPC

### Squares and roots of 28128

• 28128 squared (281282) is 791184384
• 28128 cubed (281283) is 22254434353152
• The square root of 28128 is 167.7140423459
• The cube root of 28128 is 30.4120912197

### Scales and comparisons

How big is 28128?
• 28,128 seconds is equal to 7 hours, 48 minutes, 48 seconds.
• To count from 1 to 28,128 would take you about seven 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 28128 cubic inches would be around 2.5 feet tall.

### Recreational maths with 28128

• 28128 backwards is 82182
• The number of decimal digits it has is: 5
• The sum of 28128's digits is 21
• More coming soon!

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The information we have on file for 28128 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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