28108607 has 2 divisors, whose sum is σ = 28108608. Its totient is φ = 28108606.

The previous prime is 28108601. The next prime is 28108609. The reversal of 28108607 is 70680182.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28108607 is a prime.

Together with 28108609, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28108601) 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, 14054303 + 14054304.

It is an arithmetic number, because the mean of its divisors is an integer number (14054304).

Almost surely, 2^28108607 is an apocalyptic number.

28108607 is a deficient number, since it is larger than the sum of its proper divisors (1).

28108607 is an equidigital number, since it uses as much as digits as its factorization.

28108607 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 28108607 is about 5301.7550867614. The cubic root of 28108607 is about 304.0510035327.

Adding to 28108607 its reverse (70680182), we get a palindrome (98788789).

The spelling of 28108607 in words is "twenty-eight million, one hundred eight thousand, six hundred seven".