22440024 has 32 divisors (see below), whose sum is σ = 62334000. Its totient is φ = 7479936.

The previous prime is 22439999. The next prime is 22440031. The reversal of 22440024 is 42004422.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22439979 and 22440006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51729 + ... + 52160.

Almost surely, 2^22440024 is an apocalyptic number.

22440024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22440024 is an abundant number, since it is smaller than the sum of its proper divisors (39893976).

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

22440024 is a wasteful number, since it uses less digits than its factorization.

22440024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103904 (or 103894 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 22440024 is about 4737.0902461321. The cubic root of 22440024 is about 282.0597428878.

Adding to 22440024 its reverse (42004422), we get a palindrome (64444446).

The spelling of 22440024 in words is "twenty-two million, four hundred forty thousand, twenty-four".