328648728 has 32 divisors (see below), whose sum is σ = 826864560. Its totient is φ = 108850560.

The previous prime is 328648717. The next prime is 328648781. The reversal of 328648728 is 827846823.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39843 + ... + 47378.

Almost surely, 2^328648728 is an apocalyptic number.

It is an amenable number.

328648728 is an abundant number, since it is smaller than the sum of its proper divisors (498215832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

328648728 is a wasteful number, since it uses less digits than its factorization.

328648728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87387 (or 87383 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 328648728 is about 18128.6714350501. The cubic root of 328648728 is about 690.0978143206.

The spelling of 328648728 in words is "three hundred twenty-eight million, six hundred forty-eight thousand, seven hundred twenty-eight".