28755837252 has 18 divisors (see below), whose sum is σ = 72688366478. Its totient is φ = 9585279072.

The previous prime is 28755837247. The next prime is 28755837259. The reversal of 28755837252 is 25273855782.

28755837252 is a `hidden beast` number, since 2 + 8 + 7 + 5 + 583 + 7 + 2 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22977709056 + 5778128196 = 151584^2 + 76014^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (28755837259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 399386593 + ... + 399386664.

Almost surely, 2^28755837252 is an apocalyptic number.

It is an amenable number.

28755837252 is an abundant number, since it is smaller than the sum of its proper divisors (43932529226).

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

28755837252 is a wasteful number, since it uses less digits than its factorization.

28755837252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798773267 (or 798773262 counting only the distinct ones).

The product of its digits is 9408000, while the sum is 54.

The spelling of 28755837252 in words is "twenty-eight billion, seven hundred fifty-five million, eight hundred thirty-seven thousand, two hundred fifty-two".