720

720 is a natural number that follows 719 and precedes 721. In mathematics, it is notable as 6!, since 6 factorial equals 720. Its prime factorization is 2^4 × 3^2 × 5.

720 has 30 positive divisors, making it a highly composite number. It can be written as 8 × 9 × 10, and as the product of consecutive integers 8, 9, and 10.

In geometry and measurement, 720 degrees is equal to two full rotations; 720 minutes equal 12 hours; 720 seconds equal 12 minutes.

In technology, 720p refers to HD video resolution of 1280×720 pixels and progressive scan. It is a common shorthand for high-definition content.

In Roman numerals, 720 is written as DCCXX.

In telecommunication, 720 is an area code serving the Denver metropolitan area in Colorado, United States (overlay with 303).

The year 720 CE (or AD 720) was a year in the early medieval period in the Gregorian calendar.