28782528 has 28 divisors (see below), whose sum is σ = 76154280. Its totient is φ = 9594112.

The previous prime is 28782527. The next prime is 28782553. The reversal of 28782528 is 82528782.

It is a self number, because there is not a number n which added to its sum of digits gives 28782528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28782521) 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, 74763 + ... + 75146.

Almost surely, 2^28782528 is an apocalyptic number.

It is an amenable number.

28782528 is an abundant number, since it is smaller than the sum of its proper divisors (47371752).

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

28782528 is a wasteful number, since it uses less digits than its factorization.

28782528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149924 (or 149914 counting only the distinct ones).

The product of its digits is 143360, while the sum is 42.

The square root of 28782528 is about 5364.9350415452. The cubic root of 28782528 is about 306.4617744997.

The spelling of 28782528 in words is "twenty-eight million, seven hundred eighty-two thousand, five hundred twenty-eight".