28680107 has 2 divisors, whose sum is σ = 28680108. Its totient is φ = 28680106.

The previous prime is 28680083. The next prime is 28680121. The reversal of 28680107 is 70108682.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28680107 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28680137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14340053 + 14340054.

It is an arithmetic number, because the mean of its divisors is an integer number (14340054).

Almost surely, 2^28680107 is an apocalyptic number.

28680107 is a deficient number, since it is larger than the sum of its proper divisors (1).

28680107 is an equidigital number, since it uses as much as digits as its factorization.

28680107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 28680107 is about 5355.3811255596. The cubic root of 28680107 is about 306.0978334990.

Adding to 28680107 its reverse (70108682), we get a palindrome (98788789).

The spelling of 28680107 in words is "twenty-eight million, six hundred eighty thousand, one hundred seven".