Divisor 28039

To determine if any number is divisible by 28039, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 11 and 2549 - then it is divisible by 28039.

The following tests must pass:

• Test if a number is divisible by 11
• The "Carleton Torpin Test" for Divisibility by 2549

Easy!