It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 215 268 is not a prime number.
For example, 490 215 268 can be divided by 2: 490 215 268 / 2 = 245 107 634.
For 490 215 268 to be a prime number, it would have been required that 490 215 268 has only two divisors, i.e., itself and 1.
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490 215 268 is an even number, because it is evenly divisible by 2: 490 215 268 / 2 = 245 107 634.
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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 490 215 268 is about 22 140.805.
Thus, the square root of 490 215 268 is not an integer, and therefore 490 215 268 is not a square number.
The square of a number (here 490 215 268) is the result of the product of this number (490 215 268) by itself (i.e., 490 215 268 × 490 215 268); the square of 490 215 268 is sometimes called "raising 490 215 268 to the power 2", or "490 215 268 squared".
The square of 490 215 268 is 240 311 008 980 311 808 because 490 215 268 × 490 215 268 = 490 215 2682 = 240 311 008 980 311 808.
As a consequence, 490 215 268 is the square root of 240 311 008 980 311 808.
490 215 268 is a number with 9 digits.
The multiples of 490 215 268 are all integers evenly divisible by 490 215 268, that is all numbers such that the remainder of the division by 490 215 268 is zero. There are infinitely many multiples of 490 215 268. The smallest multiples of 490 215 268 are: