323784864 has 144 divisors (see below), whose sum is σ = 1028637792. Its totient is φ = 99595008.

The previous prime is 323784859. The next prime is 323784893. The reversal of 323784864 is 468487323.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99487 + ... + 102689.

It is an arithmetic number, because the mean of its divisors is an integer number (7143318).

Almost surely, 2^323784864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 323784864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514318896).

323784864 is an abundant number, since it is smaller than the sum of its proper divisors (704852928).

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

323784864 is a wasteful number, since it uses less digits than its factorization.

323784864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241 (or 3221 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 323784864 is about 17994.0230076545. The cubic root of 323784864 is about 686.6764938215.

The spelling of 323784864 in words is "three hundred twenty-three million, seven hundred eighty-four thousand, eight hundred sixty-four".