28059113 has 4 divisors (see below), whose sum is σ = 28337028. Its totient is φ = 27781200.

The previous prime is 28059089. The next prime is 28059133. The reversal of 28059113 is 31195082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31195082 = 2 ⋅15597541.

It can be written as a sum of positive squares in 2 ways, for example, as 26491609 + 1567504 = 5147^2 + 1252^2 .

It is a cyclic number.

It is not a de Polignac number, because 28059113 - 2⁶ = 28059049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28059133) 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, 138806 + ... + 139007.

It is an arithmetic number, because the mean of its divisors is an integer number (7084257).

Almost surely, 2^28059113 is an apocalyptic number.

It is an amenable number.

28059113 is a deficient number, since it is larger than the sum of its proper divisors (277915).

28059113 is a wasteful number, since it uses less digits than its factorization.

28059113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277914.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 28059113 is about 5297.0853306323. The cubic root of 28059113 is about 303.8724397015.

The spelling of 28059113 in words is "twenty-eight million, fifty-nine thousand, one hundred thirteen".