22440424 has 16 divisors (see below), whose sum is σ = 42609600. Its totient is φ = 11077872.

The previous prime is 22440421. The next prime is 22440437. The reversal of 22440424 is 42404422.

It is a junction number, because it is equal to n+sod(n) for n = 22440395 and 22440404.

It is not an unprimeable number, because it can be changed into a prime (22440421) 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 3 ways as a sum of consecutive naturals, for example, 17122 + ... + 18385.

It is an arithmetic number, because the mean of its divisors is an integer number (2663100).

Almost surely, 2^22440424 is an apocalyptic number.

It is an amenable number.

22440424 is a deficient number, since it is larger than the sum of its proper divisors (20169176).

22440424 is a wasteful number, since it uses less digits than its factorization.

22440424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35592 (or 35588 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 22440424 is about 4737.1324659545. The cubic root of 22440424 is about 282.0614188104.

Adding to 22440424 its reverse (42404422), we get a palindrome (64844846).

The spelling of 22440424 in words is "twenty-two million, four hundred forty thousand, four hundred twenty-four".