28124528 has 20 divisors (see below), whose sum is σ = 57697200. Its totient is φ = 13234944.

The previous prime is 28124527. The next prime is 28124543. The reversal of 28124528 is 82542182.

It is a junction number, because it is equal to n+sod(n) for n = 28124494 and 28124503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28124527) 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, 51428 + ... + 51971.

It is an arithmetic number, because the mean of its divisors is an integer number (2884860).

Almost surely, 2^28124528 is an apocalyptic number.

It is an amenable number.

28124528 is an abundant number, since it is smaller than the sum of its proper divisors (29572672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28124528 is a wasteful number, since it uses less digits than its factorization.

28124528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103424 (or 103418 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 28124528 is about 5303.2563581256. The cubic root of 28124528 is about 304.1083985547.

The spelling of 28124528 in words is "twenty-eight million, one hundred twenty-four thousand, five hundred twenty-eight".