How to compare a saved number

It seem I did this many years ago in VB6 but can find an easy method in C#. Anyways, I’m try to save and retrieve options from a database as a single value. For this example I’ll use colors since they are easy to rattle off.

Red = 1
Green = 2
Blue = 4
Brown = 8
Yellow = 16
Orange = 32

The user can pick one or multiple colors. I’m saving the sum value of all the selected colors.

So for example if the user selects
Green, Brown and Yellow I would save 26 since 2+8+16 =26.
Or Brown and Orange would save 40 since 8+32=40
And if they just selected Blue then 4 would be saved.

Now let’s assume I have 11 returned from the database. Is there an easy way to determine that the color selections are Brown (8) + Green (2) + Red (1)?

I wrote a function that handles this but it seems pretty clunky and I have to believe there is a better way.