28876866 has 32 divisors (see below), whose sum is σ = 60661440. Its totient is φ = 9151296.

The previous prime is 28876849. The next prime is 28876873. The reversal of 28876866 is 66867882.

It is a Curzon number.

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, 10420 + ... + 12896.

It is an arithmetic number, because the mean of its divisors is an integer number (1895670).

Almost surely, 2^28876866 is an apocalyptic number.

28876866 is an abundant number, since it is smaller than the sum of its proper divisors (31784574).

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

28876866 is a wasteful number, since it uses less digits than its factorization.

28876866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578.

The product of its digits is 1548288, while the sum is 51.

The square root of 28876866 is about 5373.7199405998. The cubic root of 28876866 is about 306.7962304345.

The spelling of 28876866 in words is "twenty-eight million, eight hundred seventy-six thousand, eight hundred sixty-six".