34

Number
$34$ (thirty-four) is:
 * $2 \times 17$


 * The $9$th Fibonacci number, after $1, 1, 2, 3, 5, 8, 13, 21$:
 * $34 = 13 + 21$


 * The magic constant of the order $4$ magic square.

Also see

 * Magic Constant of Order 4 Magic Square