28085516 has 12 divisors (see below), whose sum is σ = 50478288. Its totient is φ = 13663152.

The previous prime is 28085489. The next prime is 28085521. The reversal of 28085516 is 61558082.

It is a happy number.

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, 94736 + ... + 95031.

It is an arithmetic number, because the mean of its divisors is an integer number (4206524).

Almost surely, 2^28085516 is an apocalyptic number.

It is an amenable number.

28085516 is a deficient number, since it is larger than the sum of its proper divisors (22392772).

28085516 is a wasteful number, since it uses less digits than its factorization.

28085516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189808 (or 189806 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 28085516 is about 5299.5769642491. The cubic root of 28085516 is about 303.9677222193.

The spelling of 28085516 in words is "twenty-eight million, eighty-five thousand, five hundred sixteen".