22332144 has 80 divisors (see below), whose sum is σ = 62138880. Its totient is φ = 6888960.

The previous prime is 22332143. The next prime is 22332173. The reversal of 22332144 is 44123322.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22332144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22332143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42604 + ... + 43124.

It is an arithmetic number, because the mean of its divisors is an integer number (776736).

Almost surely, 2^22332144 is an apocalyptic number.

22332144 is a gapful number since it is divisible by the number (24) 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 22332144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31069440).

22332144 is an abundant number, since it is smaller than the sum of its proper divisors (39806736).

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

22332144 is a wasteful number, since it uses less digits than its factorization.

22332144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 592 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 22332144 is about 4725.6897909194. The cubic root of 22332144 is about 281.6070176238.

Adding to 22332144 its reverse (44123322), we get a palindrome (66455466).

The spelling of 22332144 in words is "twenty-two million, three hundred thirty-two thousand, one hundred forty-four".