22042472 has 32 divisors (see below), whose sum is σ = 44494920. Its totient is φ = 10199040.

The previous prime is 22042469. The next prime is 22042477. The reversal of 22042472 is 27424022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17522596 + 4519876 = 4186^2 + 2126^2 .

It is not an unprimeable number, because it can be changed into a prime (22042477) 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, 6968 + ... + 9624.

Almost surely, 2^22042472 is an apocalyptic number.

It is an amenable number.

22042472 is an abundant number, since it is smaller than the sum of its proper divisors (22452448).

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

22042472 is a wasteful number, since it uses less digits than its factorization.

22042472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741 (or 2737 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 22042472 is about 4694.9411071919. The cubic root of 22042472 is about 280.3841326305.

Adding to 22042472 its reverse (27424022), we get a palindrome (49466494).

The spelling of 22042472 in words is "twenty-two million, forty-two thousand, four hundred seventy-two".