28027841173 has 4 divisors (see below), whose sum is σ = 28123499628. Its totient is φ = 27932182720.

The previous prime is 28027841159. The next prime is 28027841183. The reversal of 28027841173 is 37114872082.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15164198449 + 12863642724 = 123143^2 + 113418^2 .

It is a cyclic number.

It is not a de Polignac number, because 28027841173 - 2²⁵ = 27994286741 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 (28027841183) 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, 47828788 + ... + 47829373.

It is an arithmetic number, because the mean of its divisors is an integer number (7030874907).

Almost surely, 2^28027841173 is an apocalyptic number.

It is an amenable number.

28027841173 is a deficient number, since it is larger than the sum of its proper divisors (95658455).

28027841173 is an equidigital number, since it uses as much as digits as its factorization.

28027841173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95658454.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 28027841173 in words is "twenty-eight billion, twenty-seven million, eight hundred forty-one thousand, one hundred seventy-three".