526404 has 12 divisors (see below), whose sum is σ = 1228304. Its totient is φ = 175464.

The previous prime is 526397. The next prime is 526423. The reversal of 526404 is 404625.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21922 + ... + 21945.

2⁵²⁶⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

526404 is an abundant number, since it is smaller than the sum of its proper divisors (701900).

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

526404 is a wasteful number, since it uses less digits than its factorization.

526404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43874 (or 43872 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 526404 is about 725.5370424727. The cubic root of 526404 is about 80.7432811108.

The spelling of 526404 in words is "five hundred twenty-six thousand, four hundred four".