Is 380 a prime number? What are the divisors of 380?

## Parity of 380

380 is an even number, because it is evenly divisible by 2: 380 / 2 = 190.

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## Is 380 a perfect square number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 380 is about 19.494.

Thus, the square root of 380 is not an integer, and therefore 380 is not a square number.

## What is the square number of 380?

The square of a number (here 380) is the result of the product of this number (380) by itself (i.e., 380 × 380); the square of 380 is sometimes called "raising 380 to the power 2", or "380 squared".

The square of 380 is 144 400 because 380 × 380 = 3802 = 144 400.

As a consequence, 380 is the square root of 144 400.

## Number of digits of 380

380 is a number with 3 digits.

## What are the multiples of 380?

The multiples of 380 are all integers evenly divisible by 380, that is all numbers such that the remainder of the division by 380 is zero. There are infinitely many multiples of 380. The smallest multiples of 380 are:

## How to determine whether an integer is a prime number?

To determine the primality of a number, several algorithms can be used. The most naive technique is to test all divisors strictly smaller to the number of which we want to determine the primality (here 380). First, we can eliminate all even numbers greater than 2 (and hence 4, 6, 8…). Then, we can stop this check when we reach the square root of the number of which we want to determine the primality (here the square root is about 19.494). Historically, the sieve of Eratosthenes (dating from the Greek mathematics) implements this technique in a relatively efficient manner.

More modern techniques include the sieve of Atkin, probabilistic algorithms, and the cyclotomic AKS test.

## Numbers near 380

• Preceding numbers: …378, 379
• Following numbers: 381, 382

### Nearest numbers from 380

• Preceding prime number: 379
• Following prime number: 383
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