# 646128

## 646,128 is an even composite number composed of four prime numbers multiplied together.

What does the number 646128 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 60 divisors.

646128 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty divisors.

## Prime factorization of 646128:

### 24 × 32 × 7 × 641

(2 × 2 × 2 × 2 × 3 × 3 × 7 × 641)

See below for interesting mathematical facts about the number 646128 from the Numbermatics database.

### Names of 646128

• Cardinal: 646128 can be written as Six hundred forty-six thousand, one hundred twenty-eight.

### Scientific notation

• Scientific notation: 6.46128 × 105

### Factors of 646128

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 653

### Divisors of 646128

• Number of divisors d(n): 60
• Complete list of divisors:
• Sum of all divisors σ(n): 2069808
• Sum of proper divisors (its aliquot sum) s(n): 1423680
• 646128 is an abundant number, because the sum of its proper divisors (1423680) is greater than itself. Its abundance is 777552

### Bases of 646128

• Binary: 100111011011111100002
• Base-36: DUK0

### Squares and roots of 646128

• 646128 squared (6461282) is 417481392384
• 646128 cubed (6461283) is 269746417098289152
• The square root of 646128 is 803.8208755687
• The cube root of 646128 is 86.4515638707

### Scales and comparisons

How big is 646128?
• 646,128 seconds is equal to 1 week, 11 hours, 28 minutes, 48 seconds.
• To count from 1 to 646,128 would take you about eleven 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 646128 cubic inches would be around 7.2 feet tall.

### Recreational maths with 646128

• 646128 backwards is 821646
• The number of decimal digits it has is: 6
• The sum of 646128's digits is 27
• More coming soon!