22144722 has 32 divisors (see below), whose sum is σ = 47475072. Its totient is φ = 6868224.

The previous prime is 22144721. The next prime is 22144729. The reversal of 22144722 is 22744122.

It is a junction number, because it is equal to n+sod(n) for n = 22144692 and 22144701.

It is not an unprimeable number, because it can be changed into a prime (22144721) 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 15 ways as a sum of consecutive naturals, for example, 2938 + ... + 7274.

It is an arithmetic number, because the mean of its divisors is an integer number (1483596).

Almost surely, 2^22144722 is an apocalyptic number.

22144722 is an abundant number, since it is smaller than the sum of its proper divisors (25330350).

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

22144722 is a wasteful number, since it uses less digits than its factorization.

22144722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402.

The product of its digits is 1792, while the sum is 24.

The square root of 22144722 is about 4705.8178885290. The cubic root of 22144722 is about 280.8170099922.

Adding to 22144722 its reverse (22744122), we get a palindrome (44888844).

The spelling of 22144722 in words is "twenty-two million, one hundred forty-four thousand, seven hundred twenty-two".