It is the model number of the movement. The Grade 384 was made from 1910 to about 1924, and had 17 jewels and was usually adjusted.
384
The geometric mean of any two numbers is the square root of their product. Here, 16*24=384. Sqrt(384)=19.59591794.
384 percent = 384/100 = 3.84
384
384
147456
If you mean in feet then it is: 24*16 = 384 square feet
384
the percentage of 384 = 38400%
8937093 + 384 = 8,937,477
384 * 26 = 9,984
384 * 261 = 100,224