28086012 has 36 divisors (see below), whose sum is σ = 71239896. Its totient is φ = 9329760.

The previous prime is 28085987. The next prime is 28086017. The reversal of 28086012 is 21068082.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28086017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10738 + ... + 13094.

It is an arithmetic number, because the mean of its divisors is an integer number (1978886).

Almost surely, 2^28086012 is an apocalyptic number.

It is an amenable number.

28086012 is an abundant number, since it is smaller than the sum of its proper divisors (43153884).

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

28086012 is a wasteful number, since it uses less digits than its factorization.

28086012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698 (or 2693 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 28086012 is about 5299.6237602305. The cubic root of 28086012 is about 303.9695116008.

The spelling of 28086012 in words is "twenty-eight million, eighty-six thousand, twelve".