28588056 has 32 divisors (see below), whose sum is σ = 81680640. Its totient is φ = 8167968.

The previous prime is 28588051. The next prime is 28588069. The reversal of 28588056 is 65088582.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 28587999 and 28588017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28588051) 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, 84916 + ... + 85251.

It is an arithmetic number, because the mean of its divisors is an integer number (2552520).

Almost surely, 2^28588056 is an apocalyptic number.

It is an amenable number.

28588056 is an abundant number, since it is smaller than the sum of its proper divisors (53092584).

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

28588056 is a wasteful number, since it uses less digits than its factorization.

28588056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170183 (or 170179 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 28588056 is about 5346.7799655494. The cubic root of 28588056 is about 305.7700010338.

The spelling of 28588056 in words is "twenty-eight million, five hundred eighty-eight thousand, fifty-six".