22933138228 has 144 divisors (see below), whose sum is σ = 55560292480. Its totient is φ = 8055210240.

The previous prime is 22933138211. The next prime is 22933138247. The reversal of 22933138228 is 82283133922.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1887838 + ... + 1899946.

Almost surely, 2^22933138228 is an apocalyptic number.

22933138228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22933138228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27780146240).

22933138228 is an abundant number, since it is smaller than the sum of its proper divisors (32627154252).

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

22933138228 is a wasteful number, since it uses less digits than its factorization.

22933138228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12198 (or 12185 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

It can be divided in two parts, 22933 and 138228, that added together give a palindrome (161161).

The spelling of 22933138228 in words is "twenty-two billion, nine hundred thirty-three million, one hundred thirty-eight thousand, two hundred twenty-eight".