28687514052 has 12 divisors (see below), whose sum is σ = 66937532816. Its totient is φ = 9562504680.

The previous prime is 28687514039. The next prime is 28687514057. The reversal of 28687514052 is 25041578682.

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

It is a junction number, because it is equal to n+sod(n) for n = 28687513992 and 28687514010.

It is not an unprimeable number, because it can be changed into a prime (28687514057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195313074 + ... + 1195313097.

Almost surely, 2^28687514052 is an apocalyptic number.

It is an amenable number.

28687514052 is an abundant number, since it is smaller than the sum of its proper divisors (38250018764).

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

28687514052 is a wasteful number, since it uses less digits than its factorization.

28687514052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390626178 (or 2390626176 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 28687514052 in words is "twenty-eight billion, six hundred eighty-seven million, five hundred fourteen thousand, fifty-two".