28585279 has 6 divisors (see below), whose sum is σ = 30365984. Its totient is φ = 26903520.

The previous prime is 28585261. The next prime is 28585303. The reversal of 28585279 is 97258582.

It is not a de Polignac number, because 28585279 - 2⁵ = 28585247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28585079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49167 + ... + 49744.

Almost surely, 2^28585279 is an apocalyptic number.

28585279 is a deficient number, since it is larger than the sum of its proper divisors (1780705).

28585279 is an equidigital number, since it uses as much as digits as its factorization.

28585279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98945 (or 98928 counting only the distinct ones).

The product of its digits is 403200, while the sum is 46.

The square root of 28585279 is about 5346.5202702318. The cubic root of 28585279 is about 305.7601000366.

The spelling of 28585279 in words is "twenty-eight million, five hundred eighty-five thousand, two hundred seventy-nine".