Is 728009 a prime number?

728 009 is an odd number, because it is not evenly divisible by 2.

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• What is an even number?

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 728 009 is about 853.234.

Thus, the square root of 728 009 is not an integer, and therefore 728 009 is not a square number.

The square of a number (here 728 009) is the result of the product of this number (728 009) by itself (i.e., 728 009 × 728 009); the square of 728 009 is sometimes called "raising 728 009 to the power 2", or "728 009 squared".

The square of 728 009 is 529 997 104 081 because 728 009 × 728 009 = 728 009² = 529 997 104 081.

As a consequence, 728 009 is the square root of 529 997 104 081.

728 009 is a number with 6 digits.

The multiples of 728 009 are all integers evenly divisible by 728 009, that is all numbers such that the remainder of the division by 728 009 is zero. There are infinitely many multiples of 728 009. The smallest multiples of 728 009 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 728 009 too, since 0 × 728 009 = 0
• 728 009: indeed, 728 009 is a multiple of itself, since 728 009 is evenly divisible by 728 009 (we have 728 009 / 728 009 = 1, so the remainder of this division is indeed zero)
• 1 456 018: indeed, 1 456 018 = 728 009 × 2
• 2 184 027: indeed, 2 184 027 = 728 009 × 3
• 2 912 036: indeed, 2 912 036 = 728 009 × 4
• 3 640 045: indeed, 3 640 045 = 728 009 × 5
• etc.

• Preceding numbers: …728 007, 728 008
• Following numbers: 728 010, 728 011…

Nearest numbers from 728 009

• Preceding prime number: 728 003
• Following prime number: 728 017

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• 728 009 est-il un nombre premier ?