28556072 has 32 divisors (see below), whose sum is σ = 55123200. Its totient is φ = 13861824.

The previous prime is 28556027. The next prime is 28556081. The reversal of 28556072 is 27065582.

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, 64829 + ... + 65267.

It is an arithmetic number, because the mean of its divisors is an integer number (1722600).

Almost surely, 2^28556072 is an apocalyptic number.

It is an amenable number.

28556072 is a deficient number, since it is larger than the sum of its proper divisors (26567128).

28556072 is a wasteful number, since it uses less digits than its factorization.

28556072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 28556072 is about 5343.7881694543. The cubic root of 28556072 is about 305.6559277866.

The spelling of 28556072 in words is "twenty-eight million, five hundred fifty-six thousand, seventy-two".