22440036 has 24 divisors (see below), whose sum is σ = 52628800. Its totient is φ = 7441632.

The previous prime is 22440031. The next prime is 22440037. The reversal of 22440036 is 63004422.

It is a junction number, because it is equal to n+sod(n) for n = 22439994 and 22440021.

It is not an unprimeable number, because it can be changed into a prime (22440031) by changing a digit.

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, 2311 + ... + 7086.

Almost surely, 2^22440036 is an apocalyptic number.

It is an amenable number.

22440036 is an abundant number, since it is smaller than the sum of its proper divisors (30188764).

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

22440036 is a wasteful number, since it uses less digits than its factorization.

22440036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9603 (or 9601 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 22440036 is about 4737.0915127323. The cubic root of 22440036 is about 282.0597931658.

Adding to 22440036 its reverse (63004422), we get a palindrome (85444458).

The spelling of 22440036 in words is "twenty-two million, four hundred forty thousand, thirty-six".