28114230117 has 4 divisors (see below), whose sum is σ = 37485640160. Its totient is φ = 18742820076.

The previous prime is 28114230107. The next prime is 28114230139. The reversal of 28114230117 is 71103241182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28114230117 - 2⁸ = 28114229861 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 (28114230107) 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, 4685705017 + ... + 4685705022.

It is an arithmetic number, because the mean of its divisors is an integer number (9371410040).

Almost surely, 2^28114230117 is an apocalyptic number.

It is an amenable number.

28114230117 is a deficient number, since it is larger than the sum of its proper divisors (9371410043).

28114230117 is an equidigital number, since it uses as much as digits as its factorization.

28114230117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9371410042.

The product of its (nonzero) digits is 2688, while the sum is 30.

Adding to 28114230117 its reverse (71103241182), we get a palindrome (99217471299).

The spelling of 28114230117 in words is "twenty-eight billion, one hundred fourteen million, two hundred thirty thousand, one hundred seventeen".