28226315105 has 4 divisors (see below), whose sum is σ = 33871578132. Its totient is φ = 22581052080.

The previous prime is 28226315101. The next prime is 28226315107. The reversal of 28226315105 is 50151362282.

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 11923111249 + 16303203856 = 109193^2 + 127684^2 .

It is not a de Polignac number, because 28226315105 - 2² = 28226315101 is a prime.

It is a super-2 number, since 2×28226315105² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28226315101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2822631506 + ... + 2822631515.

It is an arithmetic number, because the mean of its divisors is an integer number (8467894533).

Almost surely, 2^28226315105 is an apocalyptic number.

It is an amenable number.

28226315105 is a deficient number, since it is larger than the sum of its proper divisors (5645263027).

28226315105 is an equidigital number, since it uses as much as digits as its factorization.

28226315105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5645263026.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 28226315105 its reverse (50151362282), we get a palindrome (78377677387).

The spelling of 28226315105 in words is "twenty-eight billion, two hundred twenty-six million, three hundred fifteen thousand, one hundred five".