using System;

public class Program

{

    public static void Main()

    {

        var reason = -2147483392;

        ReasonEnum strReason = (ReasonEnum)reason;

        Console.WriteLine(strReason);

    }

}

[Flags]

public enum ReasonEnum

{

    REASON1 = 1 << 0,

    REASON2 = 1 << 1,

    REASON3 = 1 << 2,

    //etc more flags

    //But the ones that matter for this are

    REASON9 =  1 << 8,

    REASON17 = 1 << 31  

}