28064912 has 20 divisors (see below), whose sum is σ = 54540780. Its totient is φ = 13989888.

The previous prime is 28064891. The next prime is 28064921. The reversal of 28064912 is 21946082.

It can be written as a sum of positive squares in 2 ways, for example, as 8386816 + 19678096 = 2896^2 + 4436^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3164 + ... + 8132.

It is an arithmetic number, because the mean of its divisors is an integer number (2727039).

Almost surely, 2^28064912 is an apocalyptic number.

It is an amenable number.

28064912 is a deficient number, since it is larger than the sum of its proper divisors (26475868).

28064912 is a wasteful number, since it uses less digits than its factorization.

28064912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330 (or 5324 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28064912 is about 5297.6326788482. The cubic root of 28064912 is about 303.8933721153.

The spelling of 28064912 in words is "twenty-eight million, sixty-four thousand, nine hundred twelve".