320523328 has 28 divisors (see below), whose sum is σ = 639737100. Its totient is φ = 159329792.

The previous prime is 320523317. The next prime is 320523349. The reversal of 320523328 is 823325023.

It can be written as a sum of positive squares in 2 ways, for example, as 308634624 + 11888704 = 17568^2 + 3448^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320523296 and 320523305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3403 + ... + 25546.

Almost surely, 2^320523328 is an apocalyptic number.

It is an amenable number.

320523328 is a deficient number, since it is larger than the sum of its proper divisors (319213772).

320523328 is a wasteful number, since it uses less digits than its factorization.

320523328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29134 (or 29124 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 320523328 is about 17903.1653067272. The cubic root of 320523328 is about 684.3630415486.

The spelling of 320523328 in words is "three hundred twenty million, five hundred twenty-three thousand, three hundred twenty-eight".