28667558134 has 16 divisors (see below), whose sum is σ = 43696474416. Its totient is φ = 14102589600.

The previous prime is 28667558111. The next prime is 28667558149. The reversal of 28667558134 is 43185576682.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20277 + ... + 240304.

It is an arithmetic number, because the mean of its divisors is an integer number (2731029651).

Almost surely, 2^28667558134 is an apocalyptic number.

28667558134 is a deficient number, since it is larger than the sum of its proper divisors (15028916282).

28667558134 is a wasteful number, since it uses less digits than its factorization.

28667558134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261471.

The product of its digits is 9676800, while the sum is 55.

The spelling of 28667558134 in words is "twenty-eight billion, six hundred sixty-seven million, five hundred fifty-eight thousand, one hundred thirty-four".