328765228 has 72 divisors (see below), whose sum is σ = 666968400. Its totient is φ = 141482880.

The previous prime is 328765133. The next prime is 328765249. The reversal of 328765228 is 822567823.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 827926 + ... + 828322.

It is an arithmetic number, because the mean of its divisors is an integer number (9263450).

Almost surely, 2^328765228 is an apocalyptic number.

It is an amenable number.

328765228 is an abundant number, since it is smaller than the sum of its proper divisors (338203172).

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

328765228 is a wasteful number, since it uses less digits than its factorization.

328765228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 498 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 328765228 is about 18131.8842925935. The cubic root of 328765228 is about 690.1793470643.

The spelling of 328765228 in words is "three hundred twenty-eight million, seven hundred sixty-five thousand, two hundred twenty-eight".