28597867 has 2 divisors, whose sum is σ = 28597868. Its totient is φ = 28597866.

The previous prime is 28597853. The next prime is 28597873. The reversal of 28597867 is 76879582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28597867 - 2¹⁵ = 28565099 is a prime.

It is not a weakly prime, because it can be changed into another prime (28597897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14298933 + 14298934.

It is an arithmetic number, because the mean of its divisors is an integer number (14298934).

Almost surely, 2^28597867 is an apocalyptic number.

28597867 is a deficient number, since it is larger than the sum of its proper divisors (1).

28597867 is an equidigital number, since it uses as much as digits as its factorization.

28597867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 52.

The square root of 28597867 is about 5347.6973549370. The cubic root of 28597867 is about 305.8049756210.

The spelling of 28597867 in words is "twenty-eight million, five hundred ninety-seven thousand, eight hundred sixty-seven".