812504 has 32 divisors (see below), whose sum is σ = 1900800. Its totient is φ = 316320.

The previous prime is 812503. The next prime is 812519. The reversal of 812504 is 405218.

812504 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 an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 812504.

It is not an unprimeable number, because it can be changed into a prime (812501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (59400).

2⁸¹²⁵⁰⁴ 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 812504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (950400).

812504 is an abundant number, since it is smaller than the sum of its proper divisors (1088296).

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

812504 is a wasteful number, since it uses less digits than its factorization.

812504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 812504 is about 901.3900376641. The cubic root of 812504 is about 93.3129320488.

The spelling of 812504 in words is "eight hundred twelve thousand, five hundred four".