28067856 has 40 divisors (see below), whose sum is σ = 72804864. Its totient is φ = 9317760.

The previous prime is 28067849. The next prime is 28067887. The reversal of 28067856 is 65876082.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12241 + ... + 14351.

Almost surely, 2^28067856 is an apocalyptic number.

It is an amenable number.

28067856 is an abundant number, since it is smaller than the sum of its proper divisors (44737008).

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

28067856 is a wasteful number, since it uses less digits than its factorization.

28067856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2393 counting only the distinct ones).

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

The square root of 28067856 is about 5297.9105315209. The cubic root of 28067856 is about 303.9039978486.

The spelling of 28067856 in words is "twenty-eight million, sixty-seven thousand, eight hundred fifty-six".