320434404 has 12 divisors (see below), whose sum is σ = 747680304. Its totient is φ = 106811464.

The previous prime is 320434399. The next prime is 320434447. The reversal of 320434404 is 404434023.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13351422 + ... + 13351445.

It is an arithmetic number, because the mean of its divisors is an integer number (62306692).

Almost surely, 2^320434404 is an apocalyptic number.

It is an amenable number.

320434404 is an abundant number, since it is smaller than the sum of its proper divisors (427245900).

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

320434404 is a wasteful number, since it uses less digits than its factorization.

320434404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26702874 (or 26702872 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 320434404 is about 17900.6816629982. The cubic root of 320434404 is about 684.2997472186.

Adding to 320434404 its reverse (404434023), we get a palindrome (724868427).

The spelling of 320434404 in words is "three hundred twenty million, four hundred thirty-four thousand, four hundred four".