28086966 has 16 divisors (see below), whose sum is σ = 62415600. Its totient is φ = 9362304.

The previous prime is 28086953. The next prime is 28086973. The reversal of 28086966 is 66968082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260011 + ... + 260118.

It is an arithmetic number, because the mean of its divisors is an integer number (3900975).

Almost surely, 2^28086966 is an apocalyptic number.

28086966 is an abundant number, since it is smaller than the sum of its proper divisors (34328634).

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

28086966 is a wasteful number, since it uses less digits than its factorization.

28086966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520140 (or 520134 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 28086966 is about 5299.7137658557. The cubic root of 28086966 is about 303.9729532147.

The spelling of 28086966 in words is "twenty-eight million, eighty-six thousand, nine hundred sixty-six".