28594873 has 4 divisors (see below), whose sum is σ = 28607220. Its totient is φ = 28582528.

The previous prime is 28594861. The next prime is 28594879. The reversal of 28594873 is 37849582.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 13749264 + 14845609 = 3708^2 + 3853^2 .

It is a cyclic number.

It is not a de Polignac number, because 28594873 - 2¹⁷ = 28463801 is a prime.

It is a super-2 number, since 2×28594873² = 1635333523772258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28594879) 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 3 ways as a sum of consecutive naturals, for example, 1540 + ... + 7717.

It is an arithmetic number, because the mean of its divisors is an integer number (7151805).

Almost surely, 2^28594873 is an apocalyptic number.

It is an amenable number.

28594873 is a deficient number, since it is larger than the sum of its proper divisors (12347).

28594873 is an equidigital number, since it uses as much as digits as its factorization.

28594873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12346.

The product of its digits is 483840, while the sum is 46.

The square root of 28594873 is about 5347.4174140420. The cubic root of 28594873 is about 305.7943033559.

The spelling of 28594873 in words is "twenty-eight million, five hundred ninety-four thousand, eight hundred seventy-three".