28826113 has 4 divisors (see below), whose sum is σ = 28859860. Its totient is φ = 28792368.

The previous prime is 28826093. The next prime is 28826123. The reversal of 28826113 is 31162882.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20720704 + 8105409 = 4552^2 + 2847^2 .

It is a cyclic number.

It is not a de Polignac number, because 28826113 - 2⁵ = 28826081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28826123) 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, 15558 + ... + 17311.

It is an arithmetic number, because the mean of its divisors is an integer number (7214965).

Almost surely, 2^28826113 is an apocalyptic number.

It is an amenable number.

28826113 is a deficient number, since it is larger than the sum of its proper divisors (33747).

28826113 is an equidigital number, since it uses as much as digits as its factorization.

28826113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33746.

The product of its digits is 4608, while the sum is 31.

The square root of 28826113 is about 5368.9955298920. The cubic root of 28826113 is about 306.6163868156.

Adding to 28826113 its reverse (31162882), we get a palindrome (59988995).

The spelling of 28826113 in words is "twenty-eight million, eight hundred twenty-six thousand, one hundred thirteen".