264406404 has 12 divisors (see below), whose sum is σ = 616948304. Its totient is φ = 88135464.

The previous prime is 264406381. The next prime is 264406433. The reversal of 264406404 is 404604462.

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

It is a super-2 number, since 2×264406404² = 139821492952422432, which contains 22 as substring.

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, 11016922 + ... + 11016945.

Almost surely, 2^264406404 is an apocalyptic number.

It is an amenable number.

264406404 is an abundant number, since it is smaller than the sum of its proper divisors (352541900).

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

264406404 is a wasteful number, since it uses less digits than its factorization.

264406404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22033874 (or 22033872 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 264406404 is about 16260.5782185013. The cubic root of 264406404 is about 641.8358777295.

The spelling of 264406404 in words is "two hundred sixty-four million, four hundred six thousand, four hundred four".