22140443 has 8 divisors (see below), whose sum is σ = 25246368. Its totient is φ = 19234944.

The previous prime is 22140439. The next prime is 22140449. The reversal of 22140443 is 34404122.

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

It is a cyclic number.

It is not a de Polignac number, because 22140443 - 2² = 22140439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22140449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49871 + ... + 50312.

It is an arithmetic number, because the mean of its divisors is an integer number (3155796).

Almost surely, 2^22140443 is an apocalyptic number.

22140443 is a deficient number, since it is larger than the sum of its proper divisors (3105925).

22140443 is a wasteful number, since it uses less digits than its factorization.

22140443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100213.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22140443 is about 4705.3632165859. The cubic root of 22140443 is about 280.7989215076.

Adding to 22140443 its reverse (34404122), we get a palindrome (56544565).

The spelling of 22140443 in words is "twenty-two million, one hundred forty thousand, four hundred forty-three".