28107113 has 2 divisors, whose sum is σ = 28107114. Its totient is φ = 28107112.

The previous prime is 28107097. The next prime is 28107133. The reversal of 28107113 is 31170182.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27008809 + 1098304 = 5197^2 + 1048^2 .

It is a cyclic number.

It is not a de Polignac number, because 28107113 - 2⁴ = 28107097 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28107133) 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 as a sum of consecutive naturals, namely, 14053556 + 14053557.

It is an arithmetic number, because the mean of its divisors is an integer number (14053557).

Almost surely, 2^28107113 is an apocalyptic number.

It is an amenable number.

28107113 is a deficient number, since it is larger than the sum of its proper divisors (1).

28107113 is an equidigital number, since it uses as much as digits as its factorization.

28107113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 28107113 is about 5301.6141881506. The cubic root of 28107113 is about 304.0456165677.

Adding to 28107113 its reverse (31170182), we get a palindrome (59277295).

The spelling of 28107113 in words is "twenty-eight million, one hundred seven thousand, one hundred thirteen".