Divisor 24789

To determine if any number is divisible by 24789, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 8263 - then it is divisible by 24789.

The following tests must pass:

• Test if a number is divisible by 3
• The "Duncan Brown Test" for Divisibility by 8263

Easy!