It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 37 721 016 is not a prime number.
For example, 37 721 016 can be divided by 2: 37 721 016 / 2 = 18 860 508.
For 37 721 016 to be a prime number, it would have been required that 37 721 016 has only two divisors, i.e., itself and 1.
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37 721 016 is an even number, because it is evenly divisible by 2: 37 721 016 / 2 = 18 860 508.
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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 37 721 016 is about 6 141.744.
Thus, the square root of 37 721 016 is not an integer, and therefore 37 721 016 is not a square number.
The square of a number (here 37 721 016) is the result of the product of this number (37 721 016) by itself (i.e., 37 721 016 × 37 721 016); the square of 37 721 016 is sometimes called "raising 37 721 016 to the power 2", or "37 721 016 squared".
The square of 37 721 016 is 1 422 875 048 072 256 because 37 721 016 × 37 721 016 = 37 721 0162 = 1 422 875 048 072 256.
As a consequence, 37 721 016 is the square root of 1 422 875 048 072 256.
37 721 016 is a number with 8 digits.
The multiples of 37 721 016 are all integers evenly divisible by 37 721 016, that is all numbers such that the remainder of the division by 37 721 016 is zero. There are infinitely many multiples of 37 721 016. The smallest multiples of 37 721 016 are: