It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 268 is not a prime number.
For example, 490 268 can be divided by 2: 490 268 / 2 = 245 134.
For 490 268 to be a prime number, it would have been required that 490 268 has only two divisors, i.e., itself and 1.
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490 268 is an even number, because it is evenly divisible by 2: 490 268 / 2 = 245 134.
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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 490 268 is about 700.191.
Thus, the square root of 490 268 is not an integer, and therefore 490 268 is not a square number.
The square of a number (here 490 268) is the result of the product of this number (490 268) by itself (i.e., 490 268 × 490 268); the square of 490 268 is sometimes called "raising 490 268 to the power 2", or "490 268 squared".
The square of 490 268 is 240 362 711 824 because 490 268 × 490 268 = 490 2682 = 240 362 711 824.
As a consequence, 490 268 is the square root of 240 362 711 824.
The multiples of 490 268 are all integers evenly divisible by 490 268, that is all numbers such that the remainder of the division by 490 268 is zero. There are infinitely many multiples of 490 268. The smallest multiples of 490 268 are: