# 391552128

## 391,552,128 is an even composite number composed of four prime numbers multiplied together.

What does the number 391552128 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 216 divisors.

391552128 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.

## Prime factorization of 391552128:

### 27 × 32 × 112 × 532

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 11 × 11 × 53 × 53)

See below for interesting mathematical facts about the number 391552128 from the Numbermatics database.

### Names of 391552128

• Cardinal: 391552128 can be written as Three hundred ninety-one million, five hundred fifty-two thousand, one hundred twenty-eight.

### Scientific notation

• Scientific notation: 3.91552128 × 108

### Factors of 391552128

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 69

### Divisors of 391552128

• Number of divisors d(n): 216
• Complete list of divisors:
• Sum of all divisors σ(n): 1262282385
• Sum of proper divisors (its aliquot sum) s(n): 870730257
• 391552128 is an abundant number, because the sum of its proper divisors (870730257) is greater than itself. Its abundance is 479178129

### Bases of 391552128

• Binary: 101110101011010011100100000002
• Base-36: 6H4BK0

### Squares and roots of 391552128

• 391552128 squared (3915521282) is 153313068941328384
• 391552128 cubed (3915521283) is 60030058394187835902001152
• The square root of 391552128 is 19787.6761647245
• The cube root of 391552128 is 731.5823112005

### Scales and comparisons

How big is 391552128?
• 391,552,128 seconds is equal to 12 years, 23 weeks, 2 days, 20 hours, 28 minutes, 48 seconds.
• To count from 1 to 391,552,128 would take you about eighteen years!

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 391552128 cubic inches would be around 61 feet tall.

### Recreational maths with 391552128

• 391552128 backwards is 821255193
• 391552128 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 391552128's digits is 36
• More coming soon!