Divisor 28018

To determine if any number is divisible by 28018, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 2 and 14009 - then it is divisible by 28018.

The following tests must pass:

• Test if a number is divisible by 2
• The "Colin Chan Test" for Divisibility by 14009

Easy!