28110736205 has 4 divisors (see below), whose sum is σ = 33732883452. Its totient is φ = 22488588960.

The previous prime is 28110736169. The next prime is 28110736217. The reversal of 28110736205 is 50263701182.

It is a happy number.

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 14334315076 + 13776421129 = 119726^2 + 117373^2 .

It is not a de Polignac number, because 28110736205 - 2⁸ = 28110735949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2811073616 + ... + 2811073625.

It is an arithmetic number, because the mean of its divisors is an integer number (8433220863).

Almost surely, 2^28110736205 is an apocalyptic number.

It is an amenable number.

28110736205 is a deficient number, since it is larger than the sum of its proper divisors (5622147247).

28110736205 is an equidigital number, since it uses as much as digits as its factorization.

28110736205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5622147246.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 28110736205 in words is "twenty-eight billion, one hundred ten million, seven hundred thirty-six thousand, two hundred five".