28260113 has 16 divisors (see below), whose sum is σ = 33676800. Its totient is φ = 23694048.

The previous prime is 28260109. The next prime is 28260161. The reversal of 28260113 is 31106282.

It is not a de Polignac number, because 28260113 - 2² = 28260109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28268113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15245 + ... + 16997.

It is an arithmetic number, because the mean of its divisors is an integer number (2104800).

Almost surely, 2^28260113 is an apocalyptic number.

It is an amenable number.

28260113 is a deficient number, since it is larger than the sum of its proper divisors (5416687).

28260113 is an equidigital number, since it uses as much as digits as its factorization.

28260113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1807 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 28260113 is about 5316.0241722551. The cubic root of 28260113 is about 304.5963054695.

Adding to 28260113 its reverse (31106282), we get a palindrome (59366395).

The spelling of 28260113 in words is "twenty-eight million, two hundred sixty thousand, one hundred thirteen".