28863259 has 4 divisors (see below), whose sum is σ = 28897720. Its totient is φ = 28828800.

The previous prime is 28863239. The next prime is 28863269. The reversal of 28863259 is 95236882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28863259 - 2¹¹ = 28861211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28863239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15942 + ... + 17659.

It is an arithmetic number, because the mean of its divisors is an integer number (7224430).

Almost surely, 2^28863259 is an apocalyptic number.

28863259 is a deficient number, since it is larger than the sum of its proper divisors (34461).

28863259 is an equidigital number, since it uses as much as digits as its factorization.

28863259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34460.

The product of its digits is 207360, while the sum is 43.

The square root of 28863259 is about 5372.4537224624. The cubic root of 28863259 is about 306.7480346206.

The spelling of 28863259 in words is "twenty-eight million, eight hundred sixty-three thousand, two hundred fifty-nine".