# 28129

## 28,129 is an odd composite number composed of two prime numbers multiplied together.

What does the number 28129 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

28129 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 28129:

### 23 × 1223

See below for interesting mathematical facts about the number 28129 from the Numbermatics database.

### Names of 28129

• Cardinal: 28129 can be written as Twenty-eight thousand, one hundred twenty-nine.

### Scientific notation

• Scientific notation: 2.8129 × 104

### Factors of 28129

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1246

### Divisors of 28129

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 29376
• Sum of proper divisors (its aliquot sum) s(n): 1247
• 28129 is a deficient number, because the sum of its proper divisors (1247) is less than itself. Its deficiency is 26882

### Bases of 28129

• Binary: 1101101111000012
• Base-36: LPD

### Squares and roots of 28129

• 28129 squared (281292) is 791240641
• 28129 cubed (281293) is 22256807990689
• The square root of 28129 is 167.7170235843
• The cube root of 28129 is 30.4124516167

### Scales and comparisons

How big is 28129?
• 28,129 seconds is equal to 7 hours, 48 minutes, 49 seconds.
• To count from 1 to 28,129 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 28129 cubic inches would be around 2.5 feet tall.

### Recreational maths with 28129

• 28129 backwards is 92182
• The number of decimal digits it has is: 5
• The sum of 28129's digits is 22
• More coming soon!

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The information we have on file for 28129 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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