2. Given a rectangular parallelepiped with sides 4, 6, and \( x \). For what values of the number \( x \) is the product of the surface area and the perimeter (the sum of the lengths of all edges) of this parallelepiped no more than 78 times its volume?
Write the answer in the form of an interval.

Answer: $[3 ; 8] \|[3,8]$