812404 has 12 divisors (see below), whose sum is σ = 1439424. Its totient is φ = 401144.

The previous prime is 812401. The next prime is 812431. The reversal of 812404 is 404218.

812404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892 + ... + 1555.

It is an arithmetic number, because the mean of its divisors is an integer number (119952).

2⁸¹²⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

812404 is a deficient number, since it is larger than the sum of its proper divisors (627020).

812404 is a wasteful number, since it uses less digits than its factorization.

812404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534 (or 2532 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 812404 is about 901.3345660741. The cubic root of 812404 is about 93.3091036878.

It can be divided in two parts, 81 and 2404, that added together give a triangular number (2485 = T₇₀).

The spelling of 812404 in words is "eight hundred twelve thousand, four hundred four".