28888199 has 2 divisors, whose sum is σ = 28888200. Its totient is φ = 28888198.

The previous prime is 28888193. The next prime is 28888201. The reversal of 28888199 is 99188882.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28888199 is a prime.

Together with 28888201, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28888199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28888193) 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, 14444099 + 14444100.

It is an arithmetic number, because the mean of its divisors is an integer number (14444100).

Almost surely, 2^28888199 is an apocalyptic number.

28888199 is a deficient number, since it is larger than the sum of its proper divisors (1).

28888199 is an equidigital number, since it uses as much as digits as its factorization.

28888199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 53.

The square root of 28888199 is about 5374.7743208436. The cubic root of 28888199 is about 306.8363602155.

The spelling of 28888199 in words is "twenty-eight million, eight hundred eighty-eight thousand, one hundred ninety-nine".