22144443 has 8 divisors (see below), whose sum is σ = 31080000. Its totient is φ = 13985928.

The previous prime is 22144439. The next prime is 22144453. The reversal of 22144443 is 34444122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22144443 - 2² = 22144439 is a prime.

It is a super-3 number, since 3×22144443³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22144433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194193 + ... + 194306.

It is an arithmetic number, because the mean of its divisors is an integer number (3885000).

Almost surely, 2^22144443 is an apocalyptic number.

22144443 is a deficient number, since it is larger than the sum of its proper divisors (8935557).

22144443 is a wasteful number, since it uses less digits than its factorization.

22144443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388521.

The product of its digits is 3072, while the sum is 24.

The square root of 22144443 is about 4705.7882442796. The cubic root of 22144443 is about 280.8158306551.

Adding to 22144443 its reverse (34444122), we get a palindrome (56588565).

The spelling of 22144443 in words is "twenty-two million, one hundred forty-four thousand, four hundred forty-three".