28245279 has 16 divisors (see below), whose sum is σ = 40249440. Its totient is φ = 17556480.

The previous prime is 28245263. The next prime is 28245289. The reversal of 28245279 is 97254282.

It is not a de Polignac number, because 28245279 - 2⁴ = 28245263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28245289) 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, 3019 + ... + 8099.

It is an arithmetic number, because the mean of its divisors is an integer number (2515590).

Almost surely, 2^28245279 is an apocalyptic number.

28245279 is a deficient number, since it is larger than the sum of its proper divisors (12004161).

28245279 is a wasteful number, since it uses less digits than its factorization.

28245279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210.

The product of its digits is 80640, while the sum is 39.

The square root of 28245279 is about 5314.6287734893. The cubic root of 28245279 is about 304.5430009834.

The spelling of 28245279 in words is "twenty-eight million, two hundred forty-five thousand, two hundred seventy-nine".