Divisor 20037

To determine if any number is divisible by 20037, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 6679 - then it is divisible by 20037.

The following tests must pass:

• Test if a number is divisible by 3
• The "Tony Test" for Divisibility by 6679

Easy!