23133222 has 64 divisors (see below), whose sum is σ = 61862400. Its totient is φ = 6259680.

The previous prime is 23133199. The next prime is 23133263. The reversal of 23133222 is 22233132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 23133195 and 23133204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5572 + ... + 8792.

It is an arithmetic number, because the mean of its divisors is an integer number (966600).

Almost surely, 2^23133222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23133222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30931200).

23133222 is an abundant number, since it is smaller than the sum of its proper divisors (38729178).

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

23133222 is a wasteful number, since it uses less digits than its factorization.

23133222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258 (or 3252 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 23133222 is about 4809.7008222965. The cubic root of 23133222 is about 284.9347218916.

Adding to 23133222 its reverse (22233132), we get a palindrome (45366354).

The spelling of 23133222 in words is "twenty-three million, one hundred thirty-three thousand, two hundred twenty-two".