22043536 has 20 divisors (see below), whose sum is σ = 43348912. Its totient is φ = 10856736.

The previous prime is 22043533. The next prime is 22043537. The reversal of 22043536 is 63534022.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22043536.

It is not an unprimeable number, because it can be changed into a prime (22043533) 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, 9210 + ... + 11353.

Almost surely, 2^22043536 is an apocalyptic number.

It is an amenable number.

22043536 is a deficient number, since it is larger than the sum of its proper divisors (21305376).

22043536 is a wasteful number, since it uses less digits than its factorization.

22043536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20638 (or 20632 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 22043536 is about 4695.0544192799. The cubic root of 22043536 is about 280.3886439805.

Adding to 22043536 its reverse (63534022), we get a palindrome (85577558).

The spelling of 22043536 in words is "twenty-two million, forty-three thousand, five hundred thirty-six".