1328084856 has 128 divisors (see below), whose sum is σ = 4256064000. Its totient is φ = 375860736.

The previous prime is 1328084809. The next prime is 1328084861. The reversal of 1328084856 is 6584808231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157680 + ... + 165888.

It is an arithmetic number, because the mean of its divisors is an integer number (33250500).

Almost surely, 2^1328084856 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 1328084856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2128032000).

1328084856 is an abundant number, since it is smaller than the sum of its proper divisors (2927979144).

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

1328084856 is a wasteful number, since it uses less digits than its factorization.

1328084856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8338 (or 8328 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 1328084856 is about 36442.8985674850. The cubic root of 1328084856 is about 1099.1963430210.

The spelling of 1328084856 in words is "one billion, three hundred twenty-eight million, eighty-four thousand, eight hundred fifty-six".