28056184 has 32 divisors (see below), whose sum is σ = 57234240. Its totient is φ = 12816000.

The previous prime is 28056143. The next prime is 28056187. The reversal of 28056184 is 48165082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9169 + ... + 11839.

It is an arithmetic number, because the mean of its divisors is an integer number (1788570).

Almost surely, 2^28056184 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 28056184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28617120).

28056184 is an abundant number, since it is smaller than the sum of its proper divisors (29178056).

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

28056184 is a wasteful number, since it uses less digits than its factorization.

28056184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791 (or 2787 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28056184 is about 5296.8088506194. The cubic root of 28056184 is about 303.8618659133.

The spelling of 28056184 in words is "twenty-eight million, fifty-six thousand, one hundred eighty-four".