28547672164 has 24 divisors (see below), whose sum is σ = 54513573408. Its totient is φ = 12973007040.

The previous prime is 28547672143. The next prime is 28547672183. The reversal of 28547672164 is 46127674582.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104619 + ... + 260845.

It is an arithmetic number, because the mean of its divisors is an integer number (2271398892).

Almost surely, 2^28547672164 is an apocalyptic number.

It is an amenable number.

28547672164 is a deficient number, since it is larger than the sum of its proper divisors (25965901244).

28547672164 is a wasteful number, since it uses less digits than its factorization.

28547672164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160395 (or 160393 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 52.

The spelling of 28547672164 in words is "twenty-eight billion, five hundred forty-seven million, six hundred seventy-two thousand, one hundred sixty-four".