804780 has 72 divisors (see below), whose sum is σ = 2594592. Its totient is φ = 201216.

The previous prime is 804767. The next prime is 804803. The reversal of 804780 is 87408.

It is a happy number.

804780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2929 + ... + 3191.

It is an arithmetic number, because the mean of its divisors is an integer number (36036).

2⁸⁰⁴⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 804780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1297296).

804780 is an abundant number, since it is smaller than the sum of its proper divisors (1789812).

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

804780 is a wasteful number, since it uses less digits than its factorization.

804780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 804780 is about 897.0953126619. The cubic root of 804780 is about 93.0162996058.

The spelling of 804780 in words is "eight hundred four thousand, seven hundred eighty".