It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 238 838 is not a prime number.
For example, 238 838 can be divided by 2: 238 838 / 2 = 119 419.
For 238 838 to be a prime number, it would have been required that 238 838 has only two divisors, i.e., itself and 1.
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238 838 is an even number, because it is evenly divisible by 2: 238 838 / 2 = 119 419.
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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 238 838 is about 488.711.
Thus, the square root of 238 838 is not an integer, and therefore 238 838 is not a square number.
The square of a number (here 238 838) is the result of the product of this number (238 838) by itself (i.e., 238 838 × 238 838); the square of 238 838 is sometimes called "raising 238 838 to the power 2", or "238 838 squared".
The square of 238 838 is 57 043 590 244 because 238 838 × 238 838 = 238 8382 = 57 043 590 244.
As a consequence, 238 838 is the square root of 57 043 590 244.
The multiples of 238 838 are all integers evenly divisible by 238 838, that is all numbers such that the remainder of the division by 238 838 is zero. There are infinitely many multiples of 238 838. The smallest multiples of 238 838 are: