2420

2420 is the natural number that comes after 2419 and before 2421. It appears in various mathematical contexts as a concrete example number, and it can also be used as a year designation in the Gregorian calendar, among other catalog or designator roles.

In mathematics, 2420 is an even composite number. Its prime factorization is 2^2 × 5 × 11^2. Consequently, it has 18 positive divisors. The sum of its divisors equals 5,586, so the sum of proper divisors is 3,166, which makes 2420 an abundant number with an abundance of 746. Its Roman numeral representation is MMCDXX, and in binary it is 100101110100. The digits multiply to 2 + 4 + 2 + 0 = 8, and 2420 is not divisible by 8, so it is not a Harshad number in base 10.

As a year, 2420 CE would fall in the distant future; there are no widely recorded historical events tied to that year in standard references. In fiction and speculative works, 2420 is sometimes used as a setting to explore future society, technology, or space exploration, but such depictions are imaginative rather than historical.

Beyond these uses, 2420 commonly appears as a designation in catalogs, product numbers, serials, or other identifiers across various domains.