It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 238 738 is not a prime number.
For example, 238 738 can be divided by 2: 238 738 / 2 = 119 369.
For 238 738 to be a prime number, it would have been required that 238 738 has only two divisors, i.e., itself and 1.
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238 738 is an even number, because it is evenly divisible by 2: 238 738 / 2 = 119 369.
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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 238 738 is about 488.608.
Thus, the square root of 238 738 is not an integer, and therefore 238 738 is not a square number.
The square of a number (here 238 738) is the result of the product of this number (238 738) by itself (i.e., 238 738 × 238 738); the square of 238 738 is sometimes called "raising 238 738 to the power 2", or "238 738 squared".
The square of 238 738 is 56 995 832 644 because 238 738 × 238 738 = 238 7382 = 56 995 832 644.
As a consequence, 238 738 is the square root of 56 995 832 644.
The multiples of 238 738 are all integers evenly divisible by 238 738, that is all numbers such that the remainder of the division by 238 738 is zero. There are infinitely many multiples of 238 738. The smallest multiples of 238 738 are: