28539124 has 12 divisors (see below), whose sum is σ = 52881444. Its totient is φ = 13430144.

The previous prime is 28539109. The next prime is 28539149. The reversal of 28539124 is 42193582.

It can be written as a sum of positive squares in 2 ways, for example, as 23619600 + 4919524 = 4860^2 + 2218^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 28539124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209779 + ... + 209914.

It is an arithmetic number, because the mean of its divisors is an integer number (4406787).

Almost surely, 2^28539124 is an apocalyptic number.

It is an amenable number.

28539124 is a deficient number, since it is larger than the sum of its proper divisors (24342320).

28539124 is a wasteful number, since it uses less digits than its factorization.

28539124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419714 (or 419712 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 28539124 is about 5342.2021676458. The cubic root of 28539124 is about 305.5954469914.

The spelling of 28539124 in words is "twenty-eight million, five hundred thirty-nine thousand, one hundred twenty-four".