28755625284 has 72 divisors (see below), whose sum is σ = 74067913920. Its totient is φ = 9404932032.

The previous prime is 28755625267. The next prime is 28755625289. The reversal of 28755625284 is 48252655782.

28755625284 is a `hidden beast` number, since 2 + 8 + 7 + 5 + 5 + 625 + 2 + 8 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28755625284.

It is not an unprimeable number, because it can be changed into a prime (28755625289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 368599 + ... + 439745.

Almost surely, 2^28755625284 is an apocalyptic number.

It is an amenable number.

28755625284 is an abundant number, since it is smaller than the sum of its proper divisors (45312288636).

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

28755625284 is a wasteful number, since it uses less digits than its factorization.

28755625284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71369 (or 71364 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 54.

The spelling of 28755625284 in words is "twenty-eight billion, seven hundred fifty-five million, six hundred twenty-five thousand, two hundred eighty-four".