28042199 has 2 divisors, whose sum is σ = 28042200. Its totient is φ = 28042198.

The previous prime is 28042181. The next prime is 28042207. The reversal of 28042199 is 99124082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28042199 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28042099) 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, 14021099 + 14021100.

It is an arithmetic number, because the mean of its divisors is an integer number (14021100).

Almost surely, 2^28042199 is an apocalyptic number.

28042199 is a deficient number, since it is larger than the sum of its proper divisors (1).

28042199 is an equidigital number, since it uses as much as digits as its factorization.

28042199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 28042199 is about 5295.4885515880. The cubic root of 28042199 is about 303.8113694468.

The spelling of 28042199 in words is "twenty-eight million, forty-two thousand, one hundred ninety-nine".