28805259 has 16 divisors (see below), whose sum is σ = 46476288. Its totient is φ = 15491712.

The previous prime is 28805239. The next prime is 28805267. The reversal of 28805259 is 95250882.

It is not a de Polignac number, because 28805259 - 2⁸ = 28805003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28805239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39987 + ... + 40700.

It is an arithmetic number, because the mean of its divisors is an integer number (2904768).

Almost surely, 2^28805259 is an apocalyptic number.

28805259 is a deficient number, since it is larger than the sum of its proper divisors (17671029).

28805259 is a wasteful number, since it uses less digits than its factorization.

28805259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80714.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 28805259 is about 5367.0531020291. The cubic root of 28805259 is about 306.5424293279.

The spelling of 28805259 in words is "twenty-eight million, eight hundred five thousand, two hundred fifty-nine".