28755307242 has 24 divisors (see below), whose sum is σ = 63987036516. Its totient is φ = 9326045376.

The previous prime is 28755307213. The next prime is 28755307253. The reversal of 28755307242 is 24270355782.

28755307242 is a `hidden beast` number, since 2 + 8 + 7 + 5 + 530 + 72 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22876865001 + 5878442241 = 151251^2 + 76671^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21587403 + ... + 21588734.

Almost surely, 2^28755307242 is an apocalyptic number.

28755307242 is an abundant number, since it is smaller than the sum of its proper divisors (35231729274).

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

28755307242 is a wasteful number, since it uses less digits than its factorization.

28755307242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43176182 (or 43176179 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 45.

The spelling of 28755307242 in words is "twenty-eight billion, seven hundred fifty-five million, three hundred seven thousand, two hundred forty-two".