28705759 has 2 divisors, whose sum is σ = 28705760. Its totient is φ = 28705758.

The previous prime is 28705727. The next prime is 28705769. The reversal of 28705759 is 95750782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28705759 - 2⁵ = 28705727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28705709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14352879 + 14352880.

It is an arithmetic number, because the mean of its divisors is an integer number (14352880).

Almost surely, 2^28705759 is an apocalyptic number.

28705759 is a deficient number, since it is larger than the sum of its proper divisors (1).

28705759 is an equidigital number, since it uses as much as digits as its factorization.

28705759 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 28705759 is about 5357.7755645417. The cubic root of 28705759 is about 306.1890660943.

The spelling of 28705759 in words is "twenty-eight million, seven hundred five thousand, seven hundred fifty-nine".