28087099 has 2 divisors, whose sum is σ = 28087100. Its totient is φ = 28087098.

The previous prime is 28087063. The next prime is 28087121. The reversal of 28087099 is 99078082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28087099 - 2¹¹ = 28085051 is a prime.

It is not a weakly prime, because it can be changed into another prime (28087049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14043549 + 14043550.

It is an arithmetic number, because the mean of its divisors is an integer number (14043550).

Almost surely, 2^28087099 is an apocalyptic number.

28087099 is a deficient number, since it is larger than the sum of its proper divisors (1).

28087099 is an equidigital number, since it uses as much as digits as its factorization.

28087099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 28087099 is about 5299.7263136883. The cubic root of 28087099 is about 303.9734330142.

The spelling of 28087099 in words is "twenty-eight million, eighty-seven thousand, ninety-nine".