28565052 has 12 divisors (see below), whose sum is σ = 66651816. Its totient is φ = 9521680.

The previous prime is 28565003. The next prime is 28565059. The reversal of 28565052 is 25056582.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28565059) 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, 1190199 + ... + 1190222.

It is an arithmetic number, because the mean of its divisors is an integer number (5554318).

Almost surely, 2^28565052 is an apocalyptic number.

It is an amenable number.

28565052 is an abundant number, since it is smaller than the sum of its proper divisors (38086764).

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

28565052 is a wasteful number, since it uses less digits than its factorization.

28565052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380428 (or 2380426 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 28565052 is about 5344.6283313248. The cubic root of 28565052 is about 305.6879642021.

The spelling of 28565052 in words is "twenty-eight million, five hundred sixty-five thousand, fifty-two".