320322864 has 40 divisors (see below), whose sum is σ = 856038960. Its totient is φ = 103091968.

The previous prime is 320322811. The next prime is 320322883. The reversal of 320322864 is 468223023.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113667 + ... + 116450.

It is an arithmetic number, because the mean of its divisors is an integer number (21400974).

Almost surely, 2^320322864 is an apocalyptic number.

It is an amenable number.

320322864 is an abundant number, since it is smaller than the sum of its proper divisors (535716096).

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

320322864 is a wasteful number, since it uses less digits than its factorization.

320322864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230157 (or 230151 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 320322864 is about 17897.5658680168. The cubic root of 320322864 is about 684.2203387128.

Adding to 320322864 its reverse (468223023), we get a palindrome (788545887).

The spelling of 320322864 in words is "three hundred twenty million, three hundred twenty-two thousand, eight hundred sixty-four".