28347164867 has 24 divisors (see below), whose sum is σ = 34782036576. Its totient is φ = 22612905216.

The previous prime is 28347164843. The next prime is 28347164869. The reversal of 28347164867 is 76846174382.

It is not a de Polignac number, because 28347164867 - 2⁶ = 28347164803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28347164869) 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 23 ways as a sum of consecutive naturals, for example, 33563 + ... + 240459.

It is an arithmetic number, because the mean of its divisors is an integer number (1449251524).

Almost surely, 2^28347164867 is an apocalyptic number.

28347164867 is a deficient number, since it is larger than the sum of its proper divisors (6434871709).

28347164867 is a wasteful number, since it uses less digits than its factorization.

28347164867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206987 (or 206964 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 56.

The spelling of 28347164867 in words is "twenty-eight billion, three hundred forty-seven million, one hundred sixty-four thousand, eight hundred sixty-seven".