DCCXXIV

DCCXXIV is the Roman numeral notation for the number 724. It is composed of the symbols D (500), CC (200), XX (20), and IV (4). The IV uses subtractive notation, placing I before V to indicate four, rather than adding I and V to amount to six. Together, these parts sum to 724: 500 + 200 + 20 + 4.

In historical contexts, DCCXXIV would be used to denote a year, a monarch’s regnal year, an edition or list entry, or an inscription. If interpreted as a year, DCCXXIV corresponds to 724 CE in the Common Era calendar. Roman numerals were widely employed in Europe through the medieval period and continue to appear in clocks, monuments, and formal inscriptions.

The numeral system relies on a combination of additive and subtractive rules. DCCXXIV illustrates this approach succinctly: a large value (D), followed by smaller values (CC and XX), and a subtractive pair (IV) for four. Variants such as IIII for four appear in some older or stylistic texts, but IV is the standard modern representation for 4 within the numeral sequence.

See also: Roman numerals, list of numbers in Roman numerals.