22535244 has 18 divisors (see below), whose sum is σ = 56964180. Its totient is φ = 7511736.

The previous prime is 22535243. The next prime is 22535263. The reversal of 22535244 is 44253522.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (22535243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312954 + ... + 313025.

Almost surely, 2^22535244 is an apocalyptic number.

It is an amenable number.

22535244 is an abundant number, since it is smaller than the sum of its proper divisors (34428936).

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

22535244 is a wasteful number, since it uses less digits than its factorization.

22535244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625989 (or 625984 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 22535244 is about 4747.1300803749. The cubic root of 22535244 is about 282.4581356503.

Adding to 22535244 its reverse (44253522), we get a palindrome (66788766).

The spelling of 22535244 in words is "twenty-two million, five hundred thirty-five thousand, two hundred forty-four".