28087712 has 24 divisors (see below), whose sum is σ = 55440000. Its totient is φ = 14007744.

The previous prime is 28087693. The next prime is 28087733. The reversal of 28087712 is 21778082.

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, 15089 + ... + 16847.

It is an arithmetic number, because the mean of its divisors is an integer number (2310000).

Almost surely, 2^28087712 is an apocalyptic number.

It is an amenable number.

28087712 is a deficient number, since it is larger than the sum of its proper divisors (27352288).

28087712 is a wasteful number, since it uses less digits than its factorization.

28087712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268 (or 2260 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 28087712 is about 5299.7841465479. The cubic root of 28087712 is about 303.9756444015.

The spelling of 28087712 in words is "twenty-eight million, eighty-seven thousand, seven hundred twelve".