DMP gyro hardare units -> rad/s

I cannot for the life of me find the correct gyro conversion to rad/s from the gyro hardware units using FSR +-1000 deg/s. Does anyone have this info?
I have found this in an example file
gyro[0] = (long)(gyro[0] * 32.8f); //convert to +-1000dps
gyro[0] = (long)(gyro[0] >> 16);

This gives a conversion of 32.8/2^16. can anyone verify this?

Thanks,

Thomas