28226087213 has 2 divisors, whose sum is σ = 28226087214. Its totient is φ = 28226087212.

The previous prime is 28226087189. The next prime is 28226087249. The reversal of 28226087213 is 31278062282.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28203171844 + 22915369 = 167938^2 + 4787^2 .

It is a cyclic number.

It is not a de Polignac number, because 28226087213 - 2²⁰ = 28225038637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28226087293) by changing a digit.

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 as a sum of consecutive naturals, namely, 14113043606 + 14113043607.

It is an arithmetic number, because the mean of its divisors is an integer number (14113043607).

Almost surely, 2^28226087213 is an apocalyptic number.

It is an amenable number.

28226087213 is a deficient number, since it is larger than the sum of its proper divisors (1).

28226087213 is an equidigital number, since it uses as much as digits as its factorization.

28226087213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 28226087213 in words is "twenty-eight billion, two hundred twenty-six million, eighty-seven thousand, two hundred thirteen".