# 65728

## 65,728 is an even composite number composed of three prime numbers multiplied together.

What does the number 65728 look like?

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

65728 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 65728:

### 26 × 13 × 79

(2 × 2 × 2 × 2 × 2 × 2 × 13 × 79)

See below for interesting mathematical facts about the number 65728 from the Numbermatics database.

### Names of 65728

• Cardinal: 65728 can be written as Sixty-five thousand, seven hundred twenty-eight.

### Scientific notation

• Scientific notation: 6.5728 × 104

### Factors of 65728

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 94

### Divisors of 65728

• Number of divisors d(n): 28
• Complete list of divisors:
• Sum of all divisors σ(n): 142240
• Sum of proper divisors (its aliquot sum) s(n): 76512
• 65728 is an abundant number, because the sum of its proper divisors (76512) is greater than itself. Its abundance is 10784

### Bases of 65728

• Binary: 100000000110000002
• Base-36: 1EPS

### Squares and roots of 65728

• 65728 squared (657282) is 4320169984
• 65728 cubed (657283) is 283956132708352
• The square root of 65728 is 256.3747257433
• The cube root of 65728 is 40.3568077423

### Scales and comparisons

How big is 65728?
• 65,728 seconds is equal to 18 hours, 15 minutes, 28 seconds.
• To count from 1 to 65,728 would take you about eighteen 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 65728 cubic inches would be around 3.4 feet tall.

### Recreational maths with 65728

• 65728 backwards is 82756
• The number of decimal digits it has is: 5
• The sum of 65728's digits is 28
• More coming soon!