9223773228 has 18 divisors (see below), whose sum is σ = 23315649084. Its totient is φ = 3074591064.

The previous prime is 9223773227. The next prime is 9223773271. The reversal of 9223773228 is 8223773229.

9223773228 is a `hidden beast` number, since 92 + 237 + 7 + 322 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (9223773227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128107926 + ... + 128107997.

It is an arithmetic number, because the mean of its divisors is an integer number (1295313838).

Almost surely, 2^9223773228 is an apocalyptic number.

It is an amenable number.

9223773228 is an abundant number, since it is smaller than the sum of its proper divisors (14091875856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9223773228 is a wasteful number, since it uses less digits than its factorization.

9223773228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256215933 (or 256215928 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 9223773228 is about 96040.4770292193. The cubic root of 9223773228 is about 2097.1824063276.

Subtracting from 9223773228 its reverse (8223773229), we obtain a palindrome (999999999).

The spelling of 9223773228 in words is "nine billion, two hundred twenty-three million, seven hundred seventy-three thousand, two hundred twenty-eight".