320404 has 12 divisors (see below), whose sum is σ = 640864. Its totient is φ = 137304.

The previous prime is 320401. The next prime is 320417. The reversal of 320404 is 404023.

320404 is an admirable number.

320404 is a modest number, since divided by 404 gives 32 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320401) 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, 5694 + ... + 5749.

2³²⁰⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

320404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

320404 is a wasteful number, since it uses less digits than its factorization.

320404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11454 (or 11452 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 320404 is about 566.0424012386. The cubic root of 320404 is about 68.4278103571.

Adding to 320404 its reverse (404023), we get a palindrome (724427).

The spelling of 320404 in words is "three hundred twenty thousand, four hundred four", and thus it is an iban number.