It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 494 428 is not a prime number.
For example, 494 428 can be divided by 2: 494 428 / 2 = 247 214.
For 494 428 to be a prime number, it would have been required that 494 428 has only two divisors, i.e., itself and 1.
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494 428 is an even number, because it is evenly divisible by 2: 494 428 / 2 = 247 214.
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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 494 428 is about 703.156.
Thus, the square root of 494 428 is not an integer, and therefore 494 428 is not a square number.
The square of a number (here 494 428) is the result of the product of this number (494 428) by itself (i.e., 494 428 × 494 428); the square of 494 428 is sometimes called "raising 494 428 to the power 2", or "494 428 squared".
The square of 494 428 is 244 459 047 184 because 494 428 × 494 428 = 494 4282 = 244 459 047 184.
As a consequence, 494 428 is the square root of 244 459 047 184.
The multiples of 494 428 are all integers evenly divisible by 494 428, that is all numbers such that the remainder of the division by 494 428 is zero. There are infinitely many multiples of 494 428. The smallest multiples of 494 428 are: