28173283867 has 4 divisors (see below), whose sum is σ = 28228634640. Its totient is φ = 28117933096.

The previous prime is 28173283861. The next prime is 28173283871. The reversal of 28173283867 is 76838237182.

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

It is a cyclic number.

It is not a de Polignac number, because 28173283867 - 2³¹ = 26025800219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28173283861) 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, 27674623 + ... + 27675640.

It is an arithmetic number, because the mean of its divisors is an integer number (7057158660).

Almost surely, 2^28173283867 is an apocalyptic number.

28173283867 is a deficient number, since it is larger than the sum of its proper divisors (55350773).

28173283867 is an equidigital number, since it uses as much as digits as its factorization.

28173283867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55350772.

The product of its digits is 5419008, while the sum is 55.

The spelling of 28173283867 in words is "twenty-eight billion, one hundred seventy-three million, two hundred eighty-three thousand, eight hundred sixty-seven".