It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 427 264 is not a prime number.
For example, 427 264 can be divided by 2: 427 264 / 2 = 213 632.
For 427 264 to be a prime number, it would have been required that 427 264 has only two divisors, i.e., itself and 1.
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427 264 is an even number, because it is evenly divisible by 2: 427 264 / 2 = 213 632.
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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 427 264 is about 653.654.
Thus, the square root of 427 264 is not an integer, and therefore 427 264 is not a square number.
The square of a number (here 427 264) is the result of the product of this number (427 264) by itself (i.e., 427 264 × 427 264); the square of 427 264 is sometimes called "raising 427 264 to the power 2", or "427 264 squared".
The square of 427 264 is 182 554 525 696 because 427 264 × 427 264 = 427 2642 = 182 554 525 696.
As a consequence, 427 264 is the square root of 182 554 525 696.
The multiples of 427 264 are all integers evenly divisible by 427 264, that is all numbers such that the remainder of the division by 427 264 is zero. There are infinitely many multiples of 427 264. The smallest multiples of 427 264 are: