22144332 has 96 divisors (see below), whose sum is σ = 61931520. Its totient is φ = 6027840.

The previous prime is 22144327. The next prime is 22144333. The reversal of 22144332 is 23344122.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 = 22144299 and 22144308.

It is not an unprimeable number, because it can be changed into a prime (22144333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 280269 + ... + 280347.

It is an arithmetic number, because the mean of its divisors is an integer number (645120).

Almost surely, 2^22144332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22144332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30965760).

22144332 is an abundant number, since it is smaller than the sum of its proper divisors (39787188).

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

22144332 is a wasteful number, since it uses less digits than its factorization.

22144332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 209 counting only the distinct ones).

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

The square root of 22144332 is about 4705.7764502790. The cubic root of 22144332 is about 280.8153614538.

Adding to 22144332 its reverse (23344122), we get a palindrome (45488454).

The spelling of 22144332 in words is "twenty-two million, one hundred forty-four thousand, three hundred thirty-two".