320204404 has 12 divisors (see below), whose sum is σ = 603462244. Its totient is φ = 147786624.

The previous prime is 320204393. The next prime is 320204411. The reversal of 320204404 is 404402023.

It can be written as a sum of positive squares in 2 ways, for example, as 136656100 + 183548304 = 11690^2 + 13548^2 .

It is a congruent 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, 3078837 + ... + 3078940.

Almost surely, 2^320204404 is an apocalyptic number.

It is an amenable number.

320204404 is a deficient number, since it is larger than the sum of its proper divisors (283257840).

320204404 is a wasteful number, since it uses less digits than its factorization.

320204404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6157794 (or 6157792 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 320204404 is about 17894.2561734206. The cubic root of 320204404 is about 684.1359834742.

Adding to 320204404 its reverse (404402023), we get a palindrome (724606427).

The spelling of 320204404 in words is "three hundred twenty million, two hundred four thousand, four hundred four".