What are the divisibility rules for 144?

Answer 1

The digital root (sum of digit) must be divisible by 9,

and

the number formed by the last 4 digits must be divisible by 16.

The second requirement ensures that the number is divisible by 16.

Answer 2

144 is divisible by 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, and 144. To check if a number is divisible by 144, you can first check if it is divisible by 2 (even number), then by 3 (sum of digits divisible by 3), and finally by 16 (last two digits divisible by 4 and the number formed by the last three digits divisible by 8).

Answer 3

2

Answer 4

2