MCDXXVIII

MCDXXVIII is the Roman numeral that represents the integer 1428. It is composed as M (1000) plus CD (400) plus XX (20) plus VIII (8), yielding 1000 + 400 + 20 + 8 = 1428. The use of CD demonstrates the subtractive principle in Roman numerals, where a smaller numeral placed before a larger one subtracts from it.

Roman numerals were used throughout antiquity and continued to appear on inscriptions, monuments, and clock faces through the Middle Ages and into the modern era for commemorative purposes, dates, and ordinal indicators. In historical contexts, MCDXXVIII would typically denote the year 1428 CE when used with a calendar era; without a calendar era, it would be ambiguous.

Today, MCDXXVIII may be encountered in historical texts, decorative designs, or numerals on buildings and monuments that seek a classical aesthetic. It illustrates how Roman numeral notation combines additive and subtractive principles to express larger numbers without a positional base.