28667608487 has 16 divisors (see below), whose sum is σ = 34732281600. Its totient is φ = 23098766208.

The previous prime is 28667608477. The next prime is 28667608511. The reversal of 28667608487 is 78480676682.

It is a de Polignac number, because none of the positive numbers 2^k-28667608487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28667608447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47237 + ... + 244062.

It is an arithmetic number, because the mean of its divisors is an integer number (2170767600).

Almost surely, 2^28667608487 is an apocalyptic number.

28667608487 is a deficient number, since it is larger than the sum of its proper divisors (6064673113).

28667608487 is a wasteful number, since it uses less digits than its factorization.

28667608487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292150.

The product of its (nonzero) digits is 43352064, while the sum is 62.

The spelling of 28667608487 in words is "twenty-eight billion, six hundred sixty-seven million, six hundred eight thousand, four hundred eighty-seven".