22144732 has 12 divisors (see below), whose sum is σ = 39220776. Its totient is φ = 10938800.

The previous prime is 22144729. The next prime is 22144739. The reversal of 22144732 is 23744122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22144697 and 22144706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33019 + ... + 33682.

It is an arithmetic number, because the mean of its divisors is an integer number (3268398).

Almost surely, 2^22144732 is an apocalyptic number.

It is an amenable number.

22144732 is a deficient number, since it is larger than the sum of its proper divisors (17076044).

22144732 is a wasteful number, since it uses less digits than its factorization.

22144732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66788 (or 66786 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 22144732 is about 4705.8189510435. The cubic root of 22144732 is about 280.8170522622.

Adding to 22144732 its reverse (23744122), we get a palindrome (45888854).

The spelling of 22144732 in words is "twenty-two million, one hundred forty-four thousand, seven hundred thirty-two".