28588559 has 4 divisors (see below), whose sum is σ = 30093240. Its totient is φ = 27083880.

The previous prime is 28588537. The next prime is 28588579. The reversal of 28588559 is 95588582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28588559 - 2²⁴ = 11811343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28588529) 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, 752312 + ... + 752349.

It is an arithmetic number, because the mean of its divisors is an integer number (7523310).

Almost surely, 2^28588559 is an apocalyptic number.

28588559 is a deficient number, since it is larger than the sum of its proper divisors (1504681).

28588559 is a wasteful number, since it uses less digits than its factorization.

28588559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504680.

The product of its digits is 1152000, while the sum is 50.

The square root of 28588559 is about 5346.8270029991. The cubic root of 28588559 is about 305.7717943399.

The spelling of 28588559 in words is "twenty-eight million, five hundred eighty-eight thousand, five hundred fifty-nine".