730

730 is an integer that follows 729 and precedes 731. In mathematics, 730 is an even composite number with prime factorization 2 × 5 × 73; its positive divisors are 1, 2, 5, 10, 73, 146, 365, and 730. It is the product of 73 and 10, and its digit sum is 7 + 3 + 0 = 10, making it a Harshad (Niven) number in base 10. In binary, 730 is 1011011010, and in Roman numerals it is written as DCCXXX. It is also one more than a perfect square, since 27² = 729.

As a year, 730 appears in historical timelines as 730 CE in the Julian calendar, placing it in the early medieval period. The Byzantine Empire during this era experienced ongoing iconoclasm, and the Islamic Caliphates were expanding in various regions, contexts commonly cited in discussions of the period.

In other uses, 730 can appear in catalog numbers, model designations, or numerical labels across different domains. Without context, 730 primarily serves as a numeric label associated with mathematics, numeral systems, and historical dating.

---