320996928 has 56 divisors (see below), whose sum is σ = 970637632. Its totient is φ = 91713024.

The previous prime is 320996899. The next prime is 320996989. The reversal of 320996928 is 829699023.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 118075 + ... + 120762.

Almost surely, 2^320996928 is an apocalyptic number.

It is an amenable number.

320996928 is an abundant number, since it is smaller than the sum of its proper divisors (649640704).

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

320996928 is a wasteful number, since it uses less digits than its factorization.

320996928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238859 (or 238849 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 320996928 is about 17916.3871358039. The cubic root of 320996928 is about 684.6999435291.

The spelling of 320996928 in words is "three hundred twenty million, nine hundred ninety-six thousand, nine hundred twenty-eight".