323216928 has 36 divisors (see below), whose sum is σ = 919148958. Its totient is φ = 107738880.

The previous prime is 323216863. The next prime is 323216947. The reversal of 323216928 is 829612323.

It can be written as a sum of positive squares in only one way, i.e., 314991504 + 8225424 = 17748^2 + 2868^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 323216892 and 323216901.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 560853 + ... + 561428.

Almost surely, 2^323216928 is an apocalyptic number.

It is an amenable number.

323216928 is an abundant number, since it is smaller than the sum of its proper divisors (595932030).

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

323216928 is a wasteful number, since it uses less digits than its factorization.

323216928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122297 (or 1122286 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 323216928 is about 17978.2348410516. The cubic root of 323216928 is about 686.2747697271.

The spelling of 323216928 in words is "three hundred twenty-three million, two hundred sixteen thousand, nine hundred twenty-eight".