28255528 has 16 divisors (see below), whose sum is σ = 60547680. Its totient is φ = 12109488.

The previous prime is 28255517. The next prime is 28255529. The reversal of 28255528 is 82555282.

It is not an unprimeable number, because it can be changed into a prime (28255529) 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, 252226 + ... + 252337.

It is an arithmetic number, because the mean of its divisors is an integer number (3784230).

Almost surely, 2^28255528 is an apocalyptic number.

28255528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28255528 is an abundant number, since it is smaller than the sum of its proper divisors (32292152).

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

28255528 is a wasteful number, since it uses less digits than its factorization.

28255528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504576 (or 504572 counting only the distinct ones).

The product of its digits is 64000, while the sum is 37.

The square root of 28255528 is about 5315.5929114258. The cubic root of 28255528 is about 304.5798317256.

The spelling of 28255528 in words is "twenty-eight million, two hundred fifty-five thousand, five hundred twenty-eight".