28735259 has 16 divisors (see below), whose sum is σ = 34153920. Its totient is φ = 23654400.

The previous prime is 28735241. The next prime is 28735261. The reversal of 28735259 is 95253782.

It is not a de Polignac number, because 28735259 - 2²⁴ = 11958043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28735279) 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, 71459 + ... + 71859.

It is an arithmetic number, because the mean of its divisors is an integer number (2134620).

Almost surely, 2^28735259 is an apocalyptic number.

28735259 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28735259 is a deficient number, since it is larger than the sum of its proper divisors (5418661).

28735259 is a wasteful number, since it uses less digits than its factorization.

28735259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

The product of its digits is 151200, while the sum is 41.

The square root of 28735259 is about 5360.5278657983. The cubic root of 28735259 is about 306.2939171227.

The spelling of 28735259 in words is "twenty-eight million, seven hundred thirty-five thousand, two hundred fifty-nine".