It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 738 238 is not a prime number.
For example, 738 238 can be divided by 2: 738 238 / 2 = 369 119.
For 738 238 to be a prime number, it would have been required that 738 238 has only two divisors, i.e., itself and 1.
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738 238 is an even number, because it is evenly divisible by 2: 738 238 / 2 = 369 119.
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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 738 238 is about 859.208.
Thus, the square root of 738 238 is not an integer, and therefore 738 238 is not a square number.
The square of a number (here 738 238) is the result of the product of this number (738 238) by itself (i.e., 738 238 × 738 238); the square of 738 238 is sometimes called "raising 738 238 to the power 2", or "738 238 squared".
The square of 738 238 is 544 995 344 644 because 738 238 × 738 238 = 738 2382 = 544 995 344 644.
As a consequence, 738 238 is the square root of 544 995 344 644.
The multiples of 738 238 are all integers evenly divisible by 738 238, that is all numbers such that the remainder of the division by 738 238 is zero. There are infinitely many multiples of 738 238. The smallest multiples of 738 238 are: