Q: Is 400,624 a Prime Number?
A: No, 400,624 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 400624 can be evenly divided by 1 2 4 7 8 14 16 28 49 56 73 98 112 146 196 292 343 392 511 584 686 784 1,022 1,168 1,372 2,044 2,744 3,577 4,088 5,488 7,154 8,176 14,308 25,039 28,616 50,078 57,232 100,156 200,312 and 400,624, with no remainder.
Since 400,624 cannot be divided by just 1 and 400,624, it is not a prime number.