Q: Is 1,321,728 a Composite Number?
A: Yes, 1,321,728 is a composite number.
The number 1,321,728 can be evenly divided by 1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 256 384 768 1,721 3,442 5,163 6,884 10,326 13,768 20,652 27,536 41,304 55,072 82,608 110,144 165,216 220,288 330,432 440,576 660,864 and 1,321,728, with no remainder.
Since 1,321,728 cannot be divided by just 1 and 1,321,728, it is a composite number.