It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 438 328 is not a prime number.
For example, 438 328 can be divided by 2: 438 328 / 2 = 219 164.
For 438 328 to be a prime number, it would have been required that 438 328 has only two divisors, i.e., itself and 1.
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438 328 is an even number, because it is evenly divisible by 2: 438 328 / 2 = 219 164.
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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 438 328 is about 662.063.
Thus, the square root of 438 328 is not an integer, and therefore 438 328 is not a square number.
The square of a number (here 438 328) is the result of the product of this number (438 328) by itself (i.e., 438 328 × 438 328); the square of 438 328 is sometimes called "raising 438 328 to the power 2", or "438 328 squared".
The square of 438 328 is 192 131 435 584 because 438 328 × 438 328 = 438 3282 = 192 131 435 584.
As a consequence, 438 328 is the square root of 192 131 435 584.
The multiples of 438 328 are all integers evenly divisible by 438 328, that is all numbers such that the remainder of the division by 438 328 is zero. There are infinitely many multiples of 438 328. The smallest multiples of 438 328 are: