It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 538 328 is not a prime number.
For example, 538 328 can be divided by 2: 538 328 / 2 = 269 164.
For 538 328 to be a prime number, it would have been required that 538 328 has only two divisors, i.e., itself and 1.
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538 328 is an even number, because it is evenly divisible by 2: 538 328 / 2 = 269 164.
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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 538 328 is about 733.708.
Thus, the square root of 538 328 is not an integer, and therefore 538 328 is not a square number.
The square of a number (here 538 328) is the result of the product of this number (538 328) by itself (i.e., 538 328 × 538 328); the square of 538 328 is sometimes called "raising 538 328 to the power 2", or "538 328 squared".
The square of 538 328 is 289 797 035 584 because 538 328 × 538 328 = 538 3282 = 289 797 035 584.
As a consequence, 538 328 is the square root of 289 797 035 584.
The multiples of 538 328 are all integers evenly divisible by 538 328, that is all numbers such that the remainder of the division by 538 328 is zero. There are infinitely many multiples of 538 328. The smallest multiples of 538 328 are: