Divisor 27998

To determine if any number is divisible by 27998, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 2 and 13999 - then it is divisible by 27998.

The following tests must pass:

• Test if a number is divisible by 2
• The "Nahum Shalman Test" for Divisibility by 13999

Easy!