28004959 has 2 divisors, whose sum is σ = 28004960. Its totient is φ = 28004958.

The previous prime is 28004953. The next prime is 28004971. The reversal of 28004959 is 95940082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28004959 - 2⁹ = 28004447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28004953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14002479 + 14002480.

It is an arithmetic number, because the mean of its divisors is an integer number (14002480).

Almost surely, 2^28004959 is an apocalyptic number.

28004959 is a deficient number, since it is larger than the sum of its proper divisors (1).

28004959 is an equidigital number, since it uses as much as digits as its factorization.

28004959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 28004959 is about 5291.9711828392. The cubic root of 28004959 is about 303.6768228492.

The spelling of 28004959 in words is "twenty-eight million, four thousand, nine hundred fifty-nine".