# 28864

## 28,864 is an even composite number composed of three prime numbers multiplied together.

What does the number 28864 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 28 divisors.

28864 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-eight divisors.

## Prime factorization of 28864:

### 26 × 11 × 41

(2 × 2 × 2 × 2 × 2 × 2 × 11 × 41)

See below for interesting mathematical facts about the number 28864 from the Numbermatics database.

### Names of 28864

• Cardinal: 28864 can be written as Twenty-eight thousand, eight hundred sixty-four.

### Scientific notation

• Scientific notation: 2.8864 × 104

### Factors of 28864

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 54

### Divisors of 28864

• Number of divisors d(n): 28
• Complete list of divisors:
• Sum of all divisors σ(n): 64008
• Sum of proper divisors (its aliquot sum) s(n): 35144
• 28864 is an abundant number, because the sum of its proper divisors (35144) is greater than itself. Its abundance is 6280

### Bases of 28864

• Binary: 1110000110000002
• Base-36: M9S

### Squares and roots of 28864

• 28864 squared (288642) is 833130496
• 28864 cubed (288643) is 24047478636544
• The square root of 28864 is 169.8940846529
• The cube root of 28864 is 30.6750659623

### Scales and comparisons

How big is 28864?
• 28,864 seconds is equal to 8 hours, 1 minute, 4 seconds.
• To count from 1 to 28,864 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 28864 cubic inches would be around 2.6 feet tall.

### Recreational maths with 28864

• 28864 backwards is 46882
• The number of decimal digits it has is: 5
• The sum of 28864's digits is 28
• More coming soon!