Q: Is 1,428,609 a Composite Number?
A: Yes, 1,428,609 is a composite number.
The number 1,428,609 can be evenly divided by 1 3 7 13 21 39 91 273 5,233 15,699 36,631 68,029 109,893 204,087 476,203 and 1,428,609, with no remainder.
Since 1,428,609 cannot be divided by just 1 and 1,428,609, it is a composite number.