28686064032 has 96 divisors (see below), whose sum is σ = 83788810560. Its totient is φ = 9548179200.

The previous prime is 28686064031. The next prime is 28686064051. The reversal of 28686064032 is 23046068682.

28686064032 is a `hidden beast` number, since 2 + 8 + 6 + 8 + 606 + 4 + 0 + 32 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (28686064031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581983 + ... + 629345.

It is an arithmetic number, because the mean of its divisors is an integer number (872800110).

Almost surely, 2^28686064032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28686064032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41894405280).

28686064032 is an abundant number, since it is smaller than the sum of its proper divisors (55102746528).

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

28686064032 is a wasteful number, since it uses less digits than its factorization.

28686064032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48083 (or 48069 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 28686064032 in words is "twenty-eight billion, six hundred eighty-six million, sixty-four thousand, thirty-two".