28030099 has 2 divisors, whose sum is σ = 28030100. Its totient is φ = 28030098.

The previous prime is 28030061. The next prime is 28030193. The reversal of 28030099 is 99003082.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28030099 - 2⁷ = 28029971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28030099.

It is not a weakly prime, because it can be changed into another prime (28030199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14015049 + 14015050.

It is an arithmetic number, because the mean of its divisors is an integer number (14015050).

Almost surely, 2^28030099 is an apocalyptic number.

28030099 is a deficient number, since it is larger than the sum of its proper divisors (1).

28030099 is an equidigital number, since it uses as much as digits as its factorization.

28030099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 28030099 is about 5294.3459463847. The cubic root of 28030099 is about 303.7676657126.

The spelling of 28030099 in words is "twenty-eight million, thirty thousand, ninety-nine".