Problem #PRU-100570

Problem

Find a number which:

a) It is divisible by $4$ and by $6$, is has a total of 3 prime factors, which may be repeated.

b) It is divisible by $6,9$ and $4$, but not divisible by $27$. It has $4$ prime factors in total, which may be repeated.

c) It is divisible by $5$ and has exactly $3$ positive divisors.