# 3991680

## 3,991,680 is an even composite number composed of five prime numbers multiplied together.

What does the number 3991680 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 320 divisors.

3991680 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.

## Prime factorization of 3991680:

### 27 × 34 × 5 × 7 × 11

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 7 × 11)

See below for interesting mathematical facts about the number 3991680 from the Numbermatics database.

### Names of 3991680

• Cardinal: 3991680 can be written as Three million, nine hundred ninety-one thousand, six hundred eighty.

### Scientific notation

• Scientific notation: 3.99168 × 106

### Factors of 3991680

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 28

### Divisors of 3991680

• Number of divisors d(n): 320
• Complete list of divisors:
• Sum of all divisors σ(n): 17772480
• Sum of proper divisors (its aliquot sum) s(n): 13780800
• 3991680 is an abundant number, because the sum of its proper divisors (13780800) is greater than itself. Its abundance is 9789120

### Bases of 3991680

• Binary: 11110011101000100000002
• Base-36: 2DK00

### Squares and roots of 3991680

• 3991680 squared (39916802) is 15933509222400
• 3991680 cubed (39916803) is 63601470092869632000
• The square root of 3991680 is 1997.9189172737
• The cube root of 3991680 is 158.6299689941

### Scales and comparisons

How big is 3991680?
• 3,991,680 seconds is equal to 6 weeks, 4 days, 4 hours, 48 minutes.
• To count from 1 to 3,991,680 would take you about nine weeks!

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 3991680 cubic inches would be around 13.2 feet tall.

### Recreational maths with 3991680

• 3991680 backwards is 0861993
• 3991680 is a Harshad number.
• The number of decimal digits it has is: 7
• The sum of 3991680's digits is 36
• More coming soon!

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The information we have on file for 3991680 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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