28585111 has 2 divisors, whose sum is σ = 28585112. Its totient is φ = 28585110.

The previous prime is 28585103. The next prime is 28585163. The reversal of 28585111 is 11158582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28585111 - 2³ = 28585103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28585171) 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, 14292555 + 14292556.

It is an arithmetic number, because the mean of its divisors is an integer number (14292556).

Almost surely, 2^28585111 is an apocalyptic number.

28585111 is a deficient number, since it is larger than the sum of its proper divisors (1).

28585111 is an equidigital number, since it uses as much as digits as its factorization.

28585111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3200, while the sum is 31.

The square root of 28585111 is about 5346.5045590554. The cubic root of 28585111 is about 305.7595010360.

The spelling of 28585111 in words is "twenty-eight million, five hundred eighty-five thousand, one hundred eleven".