It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 270 238 is not a prime number.
For example, 270 238 can be divided by 2: 270 238 / 2 = 135 119.
For 270 238 to be a prime number, it would have been required that 270 238 has only two divisors, i.e., itself and 1.
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270 238 is an even number, because it is evenly divisible by 2: 270 238 / 2 = 135 119.
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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 270 238 is about 519.844.
Thus, the square root of 270 238 is not an integer, and therefore 270 238 is not a square number.
The square of a number (here 270 238) is the result of the product of this number (270 238) by itself (i.e., 270 238 × 270 238); the square of 270 238 is sometimes called "raising 270 238 to the power 2", or "270 238 squared".
The square of 270 238 is 73 028 576 644 because 270 238 × 270 238 = 270 2382 = 73 028 576 644.
As a consequence, 270 238 is the square root of 73 028 576 644.
The multiples of 270 238 are all integers evenly divisible by 270 238, that is all numbers such that the remainder of the division by 270 238 is zero. There are infinitely many multiples of 270 238. The smallest multiples of 270 238 are: