28689022368 has 96 divisors (see below), whose sum is σ = 83705832000. Its totient is φ = 9559634688.

The previous prime is 28689022361. The next prime is 28689022379. The reversal of 28689022368 is 86322098682.

28689022368 is a `hidden beast` number, since 286 + 89 + 0 + 223 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28689022361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4154983 + ... + 4161881.

It is an arithmetic number, because the mean of its divisors is an integer number (871935750).

Almost surely, 2^28689022368 is an apocalyptic number.

It is an amenable number.

28689022368 is an abundant number, since it is smaller than the sum of its proper divisors (55016809632).

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

28689022368 is a wasteful number, since it uses less digits than its factorization.

28689022368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11731 (or 11717 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 28689022368 in words is "twenty-eight billion, six hundred eighty-nine million, twenty-two thousand, three hundred sixty-eight".