28769999 has 2 divisors, whose sum is σ = 28770000. Its totient is φ = 28769998.

The previous prime is 28769977. The next prime is 28770011. The reversal of 28769999 is 99996782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28769999 - 2¹² = 28765903 is a prime.

28769999 is a modest number, since divided by 9999 gives 2876 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28762999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14384999 + 14385000.

It is an arithmetic number, because the mean of its divisors is an integer number (14385000).

Almost surely, 2^28769999 is an apocalyptic number.

28769999 is a deficient number, since it is larger than the sum of its proper divisors (1).

28769999 is an equidigital number, since it uses as much as digits as its factorization.

28769999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 59.

The square root of 28769999 is about 5363.7672395435. The cubic root of 28769999 is about 306.4173005647.

The spelling of 28769999 in words is "twenty-eight million, seven hundred sixty-nine thousand, nine hundred ninety-nine".