It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 800 328 is not a prime number.
For example, 800 328 can be divided by 2: 800 328 / 2 = 400 164.
For 800 328 to be a prime number, it would have been required that 800 328 has only two divisors, i.e., itself and 1.
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800 328 is an even number, because it is evenly divisible by 2: 800 328 / 2 = 400 164.
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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 800 328 is about 894.611.
Thus, the square root of 800 328 is not an integer, and therefore 800 328 is not a square number.
The square of a number (here 800 328) is the result of the product of this number (800 328) by itself (i.e., 800 328 × 800 328); the square of 800 328 is sometimes called "raising 800 328 to the power 2", or "800 328 squared".
The square of 800 328 is 640 524 907 584 because 800 328 × 800 328 = 800 3282 = 640 524 907 584.
As a consequence, 800 328 is the square root of 640 524 907 584.
The multiples of 800 328 are all integers evenly divisible by 800 328, that is all numbers such that the remainder of the division by 800 328 is zero. There are infinitely many multiples of 800 328. The smallest multiples of 800 328 are: