Is 1044 divisible by 2 3 4 5 6 and 10?

It's trivially obvious that it's NOT divisible by 5, since doesn't end in 5 or 0. That means it's also not divisible by 10. (Not all numbers that are divisible by 5 are divisible by 10, but every number that is divisible by 10 is also divisible by 5.)

1+0+4+4 = 9, so it is divisible by 3 (and by 9).

It ends with a 4, so it's divisible by 2.

The last two digits are 44, which is divisible by 4, so the entire number is divisible by 4.

Being divisible by 2 and 3 means it's also divisible by 6.