328688956 has 12 divisors (see below), whose sum is σ = 579597480. Its totient is φ = 163089680.

The previous prime is 328688953. The next prime is 328688957. The reversal of 328688956 is 659886823.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 328688897 and 328688906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328688951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313111 + ... + 314158.

It is an arithmetic number, because the mean of its divisors is an integer number (48299790).

Almost surely, 2^328688956 is an apocalyptic number.

It is an amenable number.

328688956 is a deficient number, since it is larger than the sum of its proper divisors (250908524).

328688956 is a wasteful number, since it uses less digits than its factorization.

328688956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627404 (or 627402 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The square root of 328688956 is about 18129.7809142858. The cubic root of 328688956 is about 690.1259701395.

The spelling of 328688956 in words is "three hundred twenty-eight million, six hundred eighty-eight thousand, nine hundred fifty-six".