1328908868 has 72 divisors (see below), whose sum is σ = 2896233984. Its totient is φ = 522028800.

The previous prime is 1328908859. The next prime is 1328908873. The reversal of 1328908868 is 8688098231.

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, 311228 + ... + 315468.

It is an arithmetic number, because the mean of its divisors is an integer number (40225472).

Almost surely, 2^1328908868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1328908868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1448116992).

1328908868 is an abundant number, since it is smaller than the sum of its proper divisors (1567325116).

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

1328908868 is a wasteful number, since it uses less digits than its factorization.

1328908868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321 (or 4300 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 53.

The square root of 1328908868 is about 36454.2023366305. The cubic root of 1328908868 is about 1099.4236286277.

The spelling of 1328908868 in words is "one billion, three hundred twenty-eight million, nine hundred eight thousand, eight hundred sixty-eight".