It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 338 402 is not a prime number.
For example, 338 402 can be divided by 2: 338 402 / 2 = 169 201.
For 338 402 to be a prime number, it would have been required that 338 402 has only two divisors, i.e., itself and 1.
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338 402 is an even number, because it is evenly divisible by 2: 338 402 / 2 = 169 201.
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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 338 402 is about 581.723.
Thus, the square root of 338 402 is not an integer, and therefore 338 402 is not a square number.
The square of a number (here 338 402) is the result of the product of this number (338 402) by itself (i.e., 338 402 × 338 402); the square of 338 402 is sometimes called "raising 338 402 to the power 2", or "338 402 squared".
The square of 338 402 is 114 515 913 604 because 338 402 × 338 402 = 338 4022 = 114 515 913 604.
As a consequence, 338 402 is the square root of 114 515 913 604.
The multiples of 338 402 are all integers evenly divisible by 338 402, that is all numbers such that the remainder of the division by 338 402 is zero. There are infinitely many multiples of 338 402. The smallest multiples of 338 402 are: