# 865920

## 865,920 is an even composite number composed of five prime numbers multiplied together.

What does the number 865920 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 128 divisors.

865920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.

## Prime factorization of 865920:

### 27 × 3 × 5 × 11 × 41

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 11 × 41)

See below for interesting mathematical facts about the number 865920 from the Numbermatics database.

### Names of 865920

• Cardinal: 865920 can be written as Eight hundred sixty-five thousand, nine hundred twenty.

### Scientific notation

• Scientific notation: 8.6592 × 105

### Factors of 865920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 62

### Divisors of 865920

• Number of divisors d(n): 128
• Complete list of divisors:
• Sum of all divisors σ(n): 3084480
• Sum of proper divisors (its aliquot sum) s(n): 2218560
• 865920 is an abundant number, because the sum of its proper divisors (2218560) is greater than itself. Its abundance is 1352640

### Bases of 865920

• Binary: 110100110110100000002
• Base-36: IK5C

### Squares and roots of 865920

• 865920 squared (8659202) is 749817446400
• 865920 cubed (8659203) is 649281923186688000
• The square root of 865920 is 930.5482255101
• The cube root of 865920 is 95.3145620801

### Scales and comparisons

How big is 865920?
• 865,920 seconds is equal to 1 week, 3 days, 32 minutes.
• To count from 1 to 865,920 would take you about three days!

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 865920 cubic inches would be around 7.9 feet tall.

### Recreational maths with 865920

• 865920 backwards is 029568
• 865920 is a Harshad number.
• The number of decimal digits it has is: 6
• The sum of 865920's digits is 30
• More coming soon!