28539645164 has 12 divisors (see below), whose sum is σ = 50052721488. Its totient is φ = 14238867600.

The previous prime is 28539645091. The next prime is 28539645179. The reversal of 28539645164 is 46154693582.

It is a happy number.

It is a super-2 number, since 2×28539645164² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7736672 + ... + 7740359.

It is an arithmetic number, because the mean of its divisors is an integer number (4171060124).

Almost surely, 2^28539645164 is an apocalyptic number.

It is an amenable number.

28539645164 is a deficient number, since it is larger than the sum of its proper divisors (21513076324).

28539645164 is a wasteful number, since it uses less digits than its factorization.

28539645164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15477496 (or 15477494 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 53.

The spelling of 28539645164 in words is "twenty-eight billion, five hundred thirty-nine million, six hundred forty-five thousand, one hundred sixty-four".