Divisor 28147

To determine if any number is divisible by 28147, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 7 and 4021 - then it is divisible by 28147.

The following tests must pass:

• Test if a number is divisible by 7
• The "Yaw Mintah Test" for Divisibility by 4021

Easy!