0756

0756 is a four-digit sequence that can appear in multiple domains, including mathematics, computing, and era notation. When used as a numeric string, leading zeros may be significant for formatting, cataloging, or time stamps. In purely numeric contexts, the value is 756 if the leading zero is not considered.

In mathematics, 756 is an even composite number. It factors as 2^2 × 3^3 × 7. The digit sum is 18, so the number is divisible by 3 and by 9.

In computing and programming, numbers starting with a leading zero are sometimes treated as octal literals. For example, the sequence 0756 can be read as an octal number, which corresponds to decimal 494.

Historically, the year 756 CE is noted for Abd al-Rahman I establishing the Umayyad Emirate of Córdoba in the Iberian Peninsula, marking a significant step in the Muslim rule in Al-Andalus.

In everyday use, 0756 may appear as a time abbreviation (07:56) or as an identifier such as a catalog code, model number, or part of a postal or area code depending on the country’s numbering plan.