The greatest 4-digit number that is divisible by 16 is 9984
There is no 4-digit number that is divisible by zero.
There is no limit to the number of digits.If, for example, a X is a k-digit number which is divisible by 4 then 10*X is divisible by 4 and 10*X will be a (k+1)-digit number.
It is 9996
The largest 4 digit number that is divisable by 1 2 3 and 4 is........9996
If the last two digits are divisible by 4 then the number is divisible by 4. Thus, if the tens digit is even and the units digit is 0 or 4 or 8 OR if the tens digit is odd and the units digit is 2 or 6 then the number is divisible by 4.