320604478 has 4 divisors (see below), whose sum is σ = 480906720. Its totient is φ = 160302238.

The previous prime is 320604457. The next prime is 320604491. The reversal of 320604478 is 874406023.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 80151118 + ... + 80151121.

It is an arithmetic number, because the mean of its divisors is an integer number (120226680).

Almost surely, 2^320604478 is an apocalyptic number.

320604478 is a deficient number, since it is larger than the sum of its proper divisors (160302242).

320604478 is a wasteful number, since it uses less digits than its factorization.

320604478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160302241.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 320604478 is about 17905.4315223063. The cubic root of 320604478 is about 684.4207922849.

The spelling of 320604478 in words is "three hundred twenty million, six hundred four thousand, four hundred seventy-eight".