인간적인 is an adjective. 인간적인 can be used when you see the person who help poor. It could be translation as warm-hearted.

인간 = human (noun) 인간적 = being a human (having human's characteristic) (적 = -ic, -ical, -like, a sort of) 인간 + 적 + 이다 = be like human (이다 = similar usage to be ex. 그는 의사이다 = he is docter 그는 인간적이다 = he is very much human) 인간적이다 -> 인간적인(adj) humane 인간적인 거 말고 something not like human if the context is like not human thing but something that has no characteristic of human thing -> 인간적인 거 말고 ooo 같은 거를 찾아 if the context is like 아니;; 인간적으로... oh please;; really?? or honestly???