Divisor 28187

To determine if any number is divisible by 28187, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 71 and 397 - then it is divisible by 28187.

The following tests must pass:

• Test if a number is divisible by 71
• Test if a number is divisible by 397

Easy!