28556832 has 24 divisors (see below), whose sum is σ = 74961936. Its totient is φ = 9518912.

The previous prime is 28556831. The next prime is 28556873. The reversal of 28556832 is 23865582.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (28556831) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 148638 + ... + 148829.

It is an arithmetic number, because the mean of its divisors is an integer number (3123414).

Almost surely, 2^28556832 is an apocalyptic number.

It is an amenable number.

28556832 is an abundant number, since it is smaller than the sum of its proper divisors (46405104).

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

28556832 is a wasteful number, since it uses less digits than its factorization.

28556832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297480 (or 297472 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 28556832 is about 5343.8592795844. The cubic root of 28556832 is about 305.6586393692.

The spelling of 28556832 in words is "twenty-eight million, five hundred fifty-six thousand, eight hundred thirty-two".