328939648 has 16 divisors (see below), whose sum is σ = 655309710. Its totient is φ = 164469760.

The previous prime is 328939643. The next prime is 328939687. The reversal of 328939648 is 846939823.

It can be written as a sum of positive squares in only one way, i.e., 219276864 + 109662784 = 14808^2 + 10472^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 328939595 and 328939604.

It is not an unprimeable number, because it can be changed into a prime (328939643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284793 + ... + 1285048.

Almost surely, 2^328939648 is an apocalyptic number.

It is an amenable number.

328939648 is a deficient number, since it is larger than the sum of its proper divisors (326370062).

328939648 is an equidigital number, since it uses as much as digits as its factorization.

328939648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569855 (or 2569843 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 52.

The square root of 328939648 is about 18136.6934141811. The cubic root of 328939648 is about 690.3013792310.

The spelling of 328939648 in words is "three hundred twenty-eight million, nine hundred thirty-nine thousand, six hundred forty-eight".