28242528 has 48 divisors (see below), whose sum is σ = 77366016. Its totient is φ = 9004160.

The previous prime is 28242527. The next prime is 28242553. The reversal of 28242528 is 82524282.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28242527) 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 7 ways as a sum of consecutive naturals, for example, 4188 + ... + 8603.

It is an arithmetic number, because the mean of its divisors is an integer number (1611792).

Almost surely, 2^28242528 is an apocalyptic number.

It is an amenable number.

28242528 is an abundant number, since it is smaller than the sum of its proper divisors (49123488).

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

28242528 is a wasteful number, since it uses less digits than its factorization.

28242528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12827 (or 12819 counting only the distinct ones).

The product of its digits is 20480, while the sum is 33.

The square root of 28242528 is about 5314.3699532494. The cubic root of 28242528 is about 304.5331134903.

It can be divided in two parts, 28 and 242528, that added together give a triangular number (242556 = T₆₉₆).

The spelling of 28242528 in words is "twenty-eight million, two hundred forty-two thousand, five hundred twenty-eight".