# 385

## 385 is an odd composite number composed of three prime numbers multiplied together.

What does the number 385 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

385 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 385:

### 5 × 7 × 11

See below for interesting mathematical facts about the number 385 from the Numbermatics database.

### Names of 385

• Cardinal: 385 can be written as Three hundred eighty-five.

### Scientific notation

• Scientific notation: 3.85 × 102

### Factors of 385

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 23

### Divisors of 385

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 576
• Sum of proper divisors (its aliquot sum) s(n): 191
• 385 is a deficient number, because the sum of its proper divisors (191) is less than itself. Its deficiency is 194

### Bases of 385

• Binary: 1100000012
• Base-36: AP

### Squares and roots of 385

• 385 squared (3852) is 148225
• 385 cubed (3853) is 57066625
• The square root of 385 is 19.6214168703
• The cube root of 385 is 7.2747863487

### Scales and comparisons

How big is 385?
• 385 seconds is equal to 6 minutes, 25 seconds.
• To count from 1 to 385 would take you about three minutes.

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 385 cubic inches would be around 0.6 feet tall.

### Recreational maths with 385

• 385 backwards is 583
• The number of decimal digits it has is: 3
• The sum of 385's digits is 16
• More coming soon!