867128828 has 12 divisors (see below), whose sum is σ = 1517715360. Its totient is φ = 433495872.

The previous prime is 867128791. The next prime is 867128849. The reversal of 867128828 is 828821768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20525 + ... + 46427.

It is an arithmetic number, because the mean of its divisors is an integer number (126476280).

Almost surely, 2^867128828 is an apocalyptic number.

It is an amenable number.

867128828 is a deficient number, since it is larger than the sum of its proper divisors (650586532).

867128828 is a wasteful number, since it uses less digits than its factorization.

867128828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34276 (or 34274 counting only the distinct ones).

The product of its digits is 688128, while the sum is 50.

The square root of 867128828 is about 29447.0512615440. The cubic root of 867128828 is about 953.5889463509.

The spelling of 867128828 in words is "eight hundred sixty-seven million, one hundred twenty-eight thousand, eight hundred twenty-eight".