Divisor 1024

To determine if any number is divisible by 1024, apply this test:

1. Ignore everything except the 10 right-most digits. Every larger digit than these is irrelevant because 10¹⁰ is divisible by 1024.
2. The number should now be small enough to be able to deduce divisibility by 1024 with basic application of your 1024-times tables!

Easy!