28085704 has 8 divisors (see below), whose sum is σ = 52660710. Its totient is φ = 14042848.

The previous prime is 28085693. The next prime is 28085713. The reversal of 28085704 is 40758082.

It can be written as a sum of positive squares in only one way, i.e., 28068804 + 16900 = 5298^2 + 130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28085704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1755349 + ... + 1755364.

Almost surely, 2^28085704 is an apocalyptic number.

It is an amenable number.

28085704 is a deficient number, since it is larger than the sum of its proper divisors (24575006).

28085704 is a wasteful number, since it uses less digits than its factorization.

28085704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510719 (or 3510715 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 28085704 is about 5299.5947014843. The cubic root of 28085704 is about 303.9684004551.

The spelling of 28085704 in words is "twenty-eight million, eighty-five thousand, seven hundred four".