320328328 has 32 divisors (see below), whose sum is σ = 620294400. Its totient is φ = 154986048.

The previous prime is 320328313. The next prime is 320328329. The reversal of 320328328 is 823823023.

It is a happy number.

It is a super-2 number, since 2×320328328² = 205220475438551168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320328328.

It is not an unprimeable number, because it can be changed into a prime (320328329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33225 + ... + 41767.

It is an arithmetic number, because the mean of its divisors is an integer number (19384200).

Almost surely, 2^320328328 is an apocalyptic number.

It is an amenable number.

320328328 is a deficient number, since it is larger than the sum of its proper divisors (299966072).

320328328 is a wasteful number, since it uses less digits than its factorization.

320328328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8701 (or 8697 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 320328328 is about 17897.7185138218. The cubic root of 320328328 is about 684.2242291195.

The spelling of 320328328 in words is "three hundred twenty million, three hundred twenty-eight thousand, three hundred twenty-eight".