28087612 has 24 divisors (see below), whose sum is σ = 57989120. Its totient is φ = 11648880.

The previous prime is 28087597. The next prime is 28087639. The reversal of 28087612 is 21678082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15312 + ... + 17047.

Almost surely, 2^28087612 is an apocalyptic number.

It is an amenable number.

28087612 is an abundant number, since it is smaller than the sum of its proper divisors (29901508).

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

28087612 is a wasteful number, since it uses less digits than its factorization.

28087612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32401 (or 32399 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 28087612 is about 5299.7747121930. The cubic root of 28087612 is about 303.9752836553.

The spelling of 28087612 in words is "twenty-eight million, eighty-seven thousand, six hundred twelve".