28768799 has 2 divisors, whose sum is σ = 28768800. Its totient is φ = 28768798.

The previous prime is 28768687. The next prime is 28768801. The reversal of 28768799 is 99786782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28768799 - 2⁸ = 28768543 is a prime.

Together with 28768801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27768799) 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, 14384399 + 14384400.

It is an arithmetic number, because the mean of its divisors is an integer number (14384400).

Almost surely, 2^28768799 is an apocalyptic number.

28768799 is a deficient number, since it is larger than the sum of its proper divisors (1).

28768799 is an equidigital number, since it uses as much as digits as its factorization.

28768799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 56.

The square root of 28768799 is about 5363.6553766997. The cubic root of 28768799 is about 306.4130402717.

The spelling of 28768799 in words is "twenty-eight million, seven hundred sixty-eight thousand, seven hundred ninety-nine".