320020328 has 16 divisors (see below), whose sum is σ = 601026180. Its totient is φ = 159746688.

The previous prime is 320020313. The next prime is 320020331. The reversal of 320020328 is 823020023.

It is a happy number.

320020328 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 226743364 + 93276964 = 15058^2 + 9658^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27725 + ... + 37532.

Almost surely, 2^320020328 is an apocalyptic number.

It is an amenable number.

320020328 is a deficient number, since it is larger than the sum of its proper divisors (281005852).

320020328 is a wasteful number, since it uses less digits than its factorization.

320020328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65876 (or 65872 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 320020328 is about 17889.1119958482. Note that the first 3 decimals coincide. The cubic root of 320020328 is about 684.0048618603.

The spelling of 320020328 in words is "three hundred twenty million, twenty thousand, three hundred twenty-eight".