328878660 has 48 divisors (see below), whose sum is σ = 1004576832. Its totient is φ = 79728000.

The previous prime is 328878631. The next prime is 328878673. The reversal of 328878660 is 66878823.

It is a happy number.

It is a super-2 number, since 2×328878660² = 216322346006791200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248491 + ... + 249810.

It is an arithmetic number, because the mean of its divisors is an integer number (20928684).

Almost surely, 2^328878660 is an apocalyptic number.

328878660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328878660 is an abundant number, since it is smaller than the sum of its proper divisors (675698172).

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

328878660 is a wasteful number, since it uses less digits than its factorization.

328878660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498324 (or 498322 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 328878660 is about 18135.0119933790. The cubic root of 328878660 is about 690.2587141576.

The spelling of 328878660 in words is "three hundred twenty-eight million, eight hundred seventy-eight thousand, six hundred sixty".