28809759 has 16 divisors (see below), whose sum is σ = 42618240. Its totient is φ = 17163360.

The previous prime is 28809733. The next prime is 28809763. The reversal of 28809759 is 95790882.

It is a happy number.

It is not a de Polignac number, because 28809759 - 2⁵ = 28809727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28809779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5452 + ... + 9345.

It is an arithmetic number, because the mean of its divisors is an integer number (2663640).

Almost surely, 2^28809759 is an apocalyptic number.

28809759 is a deficient number, since it is larger than the sum of its proper divisors (13808481).

28809759 is a wasteful number, since it uses less digits than its factorization.

28809759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14870.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 28809759 is about 5367.4723101289. The cubic root of 28809759 is about 306.5583913334.

The spelling of 28809759 in words is "twenty-eight million, eight hundred nine thousand, seven hundred fifty-nine".