28560928 has 48 divisors (see below), whose sum is σ = 62868960. Its totient is φ = 12659200.

The previous prime is 28560899. The next prime is 28560967. The reversal of 28560928 is 82906582.

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, 13443 + ... + 15421.

It is an arithmetic number, because the mean of its divisors is an integer number (1309770).

Almost surely, 2^28560928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28560928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31434480).

28560928 is an abundant number, since it is smaller than the sum of its proper divisors (34308032).

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

28560928 is a wasteful number, since it uses less digits than its factorization.

28560928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2033 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 28560928 is about 5344.2425094675. The cubic root of 28560928 is about 305.6732525440.

It can be divided in two parts, 2856092 and 8, that added together give a square (2856100 = 1690²).

The spelling of 28560928 in words is "twenty-eight million, five hundred sixty thousand, nine hundred twenty-eight".