7868128 has 24 divisors (see below), whose sum is σ = 16306920. Its totient is φ = 3726720.

The previous prime is 7868111. The next prime is 7868131. The reversal of 7868128 is 8218687.

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, 5863 + ... + 7078.

It is an arithmetic number, because the mean of its divisors is an integer number (679455).

Almost surely, 2^7868128 is an apocalyptic number.

It is an amenable number.

7868128 is an abundant number, since it is smaller than the sum of its proper divisors (8438792).

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

7868128 is a wasteful number, since it uses less digits than its factorization.

7868128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12970 (or 12962 counting only the distinct ones).

The product of its digits is 43008, while the sum is 40.

The square root of 7868128 is about 2805.0183600112. The cubic root of 7868128 is about 198.8949724820.

The spelling of 7868128 in words is "seven million, eight hundred sixty-eight thousand, one hundred twenty-eight".