28104053189 has 4 divisors (see below), whose sum is σ = 28134306060. Its totient is φ = 28073800320.

The previous prime is 28104053161. The next prime is 28104053203. The reversal of 28104053189 is 98135040182.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98135040182 = 2 ⋅49067520091.

It can be written as a sum of positive squares in 2 ways, for example, as 5480885089 + 22623168100 = 74033^2 + 150410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28104053189 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 (28104050189) 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, 15125042 + ... + 15126899.

It is an arithmetic number, because the mean of its divisors is an integer number (7033576515).

Almost surely, 2^28104053189 is an apocalyptic number.

It is an amenable number.

28104053189 is a deficient number, since it is larger than the sum of its proper divisors (30252871).

28104053189 is an equidigital number, since it uses as much as digits as its factorization.

28104053189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30252870.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 28104053189 in words is "twenty-eight billion, one hundred four million, fifty-three thousand, one hundred eighty-nine".