28229637227 has 6 divisors (see below), whose sum is σ = 31029270804. Its totient is φ = 25663306460.

The previous prime is 28229637209. The next prime is 28229637263. The reversal of 28229637227 is 72273692282.

It is not a de Polignac number, because 28229637227 - 2¹⁶ = 28229571691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28229627227) 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 5 ways as a sum of consecutive naturals, for example, 116651273 + ... + 116651514.

It is an arithmetic number, because the mean of its divisors is an integer number (5171545134).

Almost surely, 2^28229637227 is an apocalyptic number.

28229637227 is a deficient number, since it is larger than the sum of its proper divisors (2799633577).

28229637227 is a wasteful number, since it uses less digits than its factorization.

28229637227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233302809 (or 233302798 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 50.

The spelling of 28229637227 in words is "twenty-eight billion, two hundred twenty-nine million, six hundred thirty-seven thousand, two hundred twenty-seven".