22404434 has 16 divisors (see below), whose sum is σ = 36313368. Its totient is φ = 10305792.

The previous prime is 22404427. The next prime is 22404463. The reversal of 22404434 is 43440422.

It can be written as a sum of positive squares in 4 ways, for example, as 12145225 + 10259209 = 3485^2 + 3203^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7484 + ... + 10040.

Almost surely, 2^22404434 is an apocalyptic number.

22404434 is a deficient number, since it is larger than the sum of its proper divisors (13908934).

22404434 is a wasteful number, since it uses less digits than its factorization.

22404434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 22404434 is about 4733.3322300468. The cubic root of 22404434 is about 281.9105478903.

Adding to 22404434 its reverse (43440422), we get a palindrome (65844856).

The spelling of 22404434 in words is "twenty-two million, four hundred four thousand, four hundred thirty-four".