22440032 has 24 divisors (see below), whose sum is σ = 45605952. Its totient is φ = 10857600.

The previous prime is 22440031. The next prime is 22440037. The reversal of 22440032 is 23004422.

It is a super-2 number, since 2×22440032² = 1007110072322048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440031) 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, 10319 + ... + 12302.

It is an arithmetic number, because the mean of its divisors is an integer number (1900248).

Almost surely, 2^22440032 is an apocalyptic number.

It is an amenable number.

22440032 is an abundant number, since it is smaller than the sum of its proper divisors (23165920).

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

22440032 is a wasteful number, since it uses less digits than its factorization.

22440032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22662 (or 22654 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 22440032 is about 4737.0910905322. The cubic root of 22440032 is about 282.0597764065.

Adding to 22440032 its reverse (23004422), we get a palindrome (45444454).

The spelling of 22440032 in words is "twenty-two million, four hundred forty thousand, thirty-two".