28662113 has 2 divisors, whose sum is σ = 28662114. Its totient is φ = 28662112.

The previous prime is 28662103. The next prime is 28662133. The reversal of 28662113 is 31126682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28601104 + 61009 = 5348^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 28662113 - 2⁴ = 28662097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28662103) 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, 14331056 + 14331057.

It is an arithmetic number, because the mean of its divisors is an integer number (14331057).

Almost surely, 2^28662113 is an apocalyptic number.

It is an amenable number.

28662113 is a deficient number, since it is larger than the sum of its proper divisors (1).

28662113 is an equidigital number, since it uses as much as digits as its factorization.

28662113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 28662113 is about 5353.7008694921. The cubic root of 28662113 is about 306.0338044873.

Adding to 28662113 its reverse (31126682), we get a palindrome (59788795).

The spelling of 28662113 in words is "twenty-eight million, six hundred sixty-two thousand, one hundred thirteen".