Is 32 a prime number? What are the divisors of 32?

## Parity of 32

32 is an even number, because it is evenly divisible by 2: 32 / 2 = 16.

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## Is 32 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 32 is about 5.657.

Thus, the square root of 32 is not an integer, and therefore 32 is not a square number.

## What is the square number of 32?

The square of a number (here 32) is the result of the product of this number (32) by itself (i.e., 32 × 32); the square of 32 is sometimes called "raising 32 to the power 2", or "32 squared".

The square of 32 is 1 024 because 32 × 32 = 322 = 1 024.

As a consequence, 32 is the square root of 1 024.

## Number of digits of 32

32 is a number with 2 digits.

## What are the multiples of 32?

The multiples of 32 are all integers evenly divisible by 32, that is all numbers such that the remainder of the division by 32 is zero. There are infinitely many multiples of 32. The smallest multiples of 32 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 32 too, since 0 × 32 = 0
• 32: indeed, 32 is a multiple of itself, since 32 is evenly divisible by 32 (we have 32 / 32 = 1, so the remainder of this division is indeed zero)
• 64: indeed, 64 = 32 × 2
• 96: indeed, 96 = 32 × 3
• 128: indeed, 128 = 32 × 4
• 160: indeed, 160 = 32 × 5
• etc.

## 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 32). 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 5.657). 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 32

• Preceding numbers: …30, 31
• Following numbers: 33, 34

### Nearest numbers from 32

• Preceding prime number: 31
• Following prime number: 37
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