328939646 has 24 divisors (see below), whose sum is σ = 574601040. Its totient is φ = 140818272.

The previous prime is 328939643. The next prime is 328939687. The reversal of 328939646 is 646939823.

It is a junction number, because it is equal to n+sod(n) for n = 328939594 and 328939603.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151706 + ... + 153858.

It is an arithmetic number, because the mean of its divisors is an integer number (23941710).

Almost surely, 2^328939646 is an apocalyptic number.

328939646 is a deficient number, since it is larger than the sum of its proper divisors (245661394).

328939646 is a wasteful number, since it uses less digits than its factorization.

328939646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728 (or 3721 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 50.

The square root of 328939646 is about 18136.6933590443. The cubic root of 328939646 is about 690.3013778320.

The spelling of 328939646 in words is "three hundred twenty-eight million, nine hundred thirty-nine thousand, six hundred forty-six".