28107511168 has 64 divisors (see below), whose sum is σ = 62737013520. Its totient is φ = 12430817280.

The previous prime is 28107511163. The next prime is 28107511171. The reversal of 28107511168 is 86111570182.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 28107511168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28107511163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217671 + ... + 321862.

Almost surely, 2^28107511168 is an apocalyptic number.

It is an amenable number.

28107511168 is an abundant number, since it is smaller than the sum of its proper divisors (34629502352).

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

28107511168 is a wasteful number, since it uses less digits than its factorization.

28107511168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539595 (or 539583 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 40.

The spelling of 28107511168 in words is "twenty-eight billion, one hundred seven million, five hundred eleven thousand, one hundred sixty-eight".