804020 has 24 divisors (see below), whose sum is σ = 1929984. Its totient is φ = 275616.

The previous prime is 804017. The next prime is 804031. The reversal of 804020 is 20408.

804020 is nontrivially palindromic in base 6.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 803986 and 804004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2732 + ... + 3011.

It is an arithmetic number, because the mean of its divisors is an integer number (80416).

2⁸⁰⁴⁰²⁰ is an apocalyptic number.

It is an amenable number.

804020 is an abundant number, since it is smaller than the sum of its proper divisors (1125964).

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

804020 is a wasteful number, since it uses less digits than its factorization.

804020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5759 (or 5757 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 804020 is about 896.6716232825. The cubic root of 804020 is about 92.9870101717.

Adding to 804020 its reverse (20408), we get a palindrome (824428).

The spelling of 804020 in words is "eight hundred four thousand, twenty".