497820 has 24 divisors (see below), whose sum is σ = 1394064. Its totient is φ = 132736.

The previous prime is 497813. The next prime is 497831. The reversal of 497820 is 28794.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a plaindrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 497820.

It is an unprimeable number.

497820 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4089 + ... + 4208.

It is an arithmetic number, because the mean of its divisors is an integer number (58086).

2⁴⁹⁷⁸²⁰ is an apocalyptic number.

It is an amenable number.

497820 is an abundant number, since it is smaller than the sum of its proper divisors (896244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

497820 is a wasteful number, since it uses less digits than its factorization.

497820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8309 (or 8307 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 497820 is about 705.5636045035. The cubic root of 497820 is about 79.2545334044.

The spelling of 497820 in words is "four hundred ninety-seven thousand, eight hundred twenty".