The number "228" can refer to various concepts, but one notable reference is the 228 Incident, a significant event in Taiwanese history. This incident occurred on February 28, 1947, when a conflict between the local population and the government led to widespread protests and violence. It marked the beginning of a period of martial law in Taiwan that lasted for several decades. In mathematics, "228" is an even composite number. It can be factored into prime numbers as 2 × 2 × 3 × 19. Additionally, it is the sum of the first 15 positive integers, making it a triangular number.