28647476167 has 4 divisors (see below), whose sum is σ = 28795908880. Its totient is φ = 28499043456.

The previous prime is 28647476153. The next prime is 28647476197. The reversal of 28647476167 is 76167474682.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28647476167 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 (28647476197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74216067 + ... + 74216452.

It is an arithmetic number, because the mean of its divisors is an integer number (7198977220).

Almost surely, 2^28647476167 is an apocalyptic number.

28647476167 is a deficient number, since it is larger than the sum of its proper divisors (148432713).

28647476167 is a wasteful number, since it uses less digits than its factorization.

28647476167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148432712.

The product of its digits is 18966528, while the sum is 58.

The spelling of 28647476167 in words is "twenty-eight billion, six hundred forty-seven million, four hundred seventy-six thousand, one hundred sixty-seven".