28565107 has 2 divisors, whose sum is σ = 28565108. Its totient is φ = 28565106.

The previous prime is 28565099. The next prime is 28565111. The reversal of 28565107 is 70156582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28565107 - 2³ = 28565099 is a prime.

It is not a weakly prime, because it can be changed into another prime (28565137) 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, 14282553 + 14282554.

It is an arithmetic number, because the mean of its divisors is an integer number (14282554).

Almost surely, 2^28565107 is an apocalyptic number.

28565107 is a deficient number, since it is larger than the sum of its proper divisors (1).

28565107 is an equidigital number, since it uses as much as digits as its factorization.

28565107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 28565107 is about 5344.6334766755. The cubic root of 28565107 is about 305.6881603955.

The spelling of 28565107 in words is "twenty-eight million, five hundred sixty-five thousand, one hundred seven".