28804879 has 2 divisors, whose sum is σ = 28804880. Its totient is φ = 28804878.

The previous prime is 28804873. The next prime is 28804903. The reversal of 28804879 is 97840882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28804879 - 2⁷ = 28804751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28804873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14402439 + 14402440.

It is an arithmetic number, because the mean of its divisors is an integer number (14402440).

Almost surely, 2^28804879 is an apocalyptic number.

28804879 is a deficient number, since it is larger than the sum of its proper divisors (1).

28804879 is an equidigital number, since it uses as much as digits as its factorization.

28804879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 28804879 is about 5367.0177007347. The cubic root of 28804879 is about 306.5410813491.

The spelling of 28804879 in words is "twenty-eight million, eight hundred four thousand, eight hundred seventy-nine".