Definition:Polydivisible Number/Definition 2

Definition
All integers from $1$ to $9$ are defined as being polydivisible.

A positive integer $N$ such that $N \ge 10$ is polydivisible :
 * $(1): \quad$ It is divisible by the number of its digits
 * $(2): \quad$ The integer which remains when its last digit is deleted is also polydivisible.

Also see

 * Equivalence of Definitions of Polydivisible Number