22222332 has 72 divisors (see below), whose sum is σ = 64904112. Its totient is φ = 6336000.

The previous prime is 22222331. The next prime is 22222351. The reversal of 22222332 is 23322222.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5082 + ... + 8382.

It is an arithmetic number, because the mean of its divisors is an integer number (901446).

Almost surely, 2^22222332 is an apocalyptic number.

22222332 is a gapful number since it is divisible by the number (22) 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 22222332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32452056).

22222332 is an abundant number, since it is smaller than the sum of its proper divisors (42681780).

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

22222332 is a wasteful number, since it uses less digits than its factorization.

22222332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339 (or 3334 counting only the distinct ones).

The product of its digits is 576, while the sum is 18.

The square root of 22222332 is about 4714.0568515876. The cubic root of 22222332 is about 281.1446847173.

Adding to 22222332 its reverse (23322222), we get a palindrome (45544554).

It can be divided in two parts, 2222 and 2332, that added together give a palindrome (4554).

The spelling of 22222332 in words is "twenty-two million, two hundred twenty-two thousand, three hundred thirty-two".