240

Number
$240$ (two hundred and forty) is:


 * $2^4 \times 3 \times 5$


 * The $12$th superabundant number after $1, 2, 4, 6, 12, 24, 36, 48, 60, 120, 180$:
 * $\dfrac {\sigma \left({240}\right)} {240} = \dfrac {744} {240} = 3 \cdotp 1$


 * The length of the longest edge of the smallest cuboid whose edges and the diagonals of whose faces are all integers:
 * The lengths of the edges are $44, 117, 240$
 * The lengths of the diagonals of the faces are $125, 244, 267$.

Also see

 * Cuboid with Integer Edges and Face Diagonals