163820

163,820 is a natural number in the decimal numeral system, lying between 163,819 and 163,821. In mathematics it has several notable properties.

Its prime factorization is 2^2 × 5 × 8191, which shows that the number is composite. This factorization also implies that 163,820 has 12 positive divisors. The number is even and ends with a zero, making it divisible by 10 and, more specifically, by 4 and 20 as well. The digits of 163,820 sum to 20, so the number is a Harshad (Niven) number in base 10: 163,820 ÷ 20 = 8,191. The quotient 8,191 is itself a prime number.

In other contexts, 163,820 may appear as an identifier or catalog number. For example, in astronomy, numbers in the 160,000s are commonly used to designate minor planets once their orbits are confirmed; if the object has been assigned the permanent number 163,820, it would refer to that specific minor planet. However, without reference to a particular catalog entry, 163,820 does not denote a single widely known entity.

Summary: 163,820 is a composite, even integer with prime factorization 2^2 × 5 × 8191, has 12 divisors, is a Harshad number in base 10, and can serve as a generic identifier in various catalogues or databases.