28607856 has 40 divisors (see below), whose sum is σ = 74411904. Its totient is φ = 9470400.

The previous prime is 28607809. The next prime is 28607867. The reversal of 28607856 is 65870682.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 5275 + ... + 9221.

Almost surely, 2^28607856 is an apocalyptic number.

It is an amenable number.

28607856 is an abundant number, since it is smaller than the sum of its proper divisors (45804048).

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

28607856 is a wasteful number, since it uses less digits than its factorization.

28607856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109 (or 4103 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 28607856 is about 5348.6312267719. The cubic root of 28607856 is about 305.8405765315.

The spelling of 28607856 in words is "twenty-eight million, six hundred seven thousand, eight hundred fifty-six".