22404556 has 6 divisors (see below), whose sum is σ = 39207980. Its totient is φ = 11202276.

The previous prime is 22404541. The next prime is 22404619. The reversal of 22404556 is 65540422.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2800566 + ... + 2800573.

Almost surely, 2^22404556 is an apocalyptic number.

It is an amenable number.

22404556 is a deficient number, since it is larger than the sum of its proper divisors (16803424).

22404556 is a wasteful number, since it uses less digits than its factorization.

22404556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5601143 (or 5601141 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 22404556 is about 4733.3451173562. The cubic root of 22404556 is about 281.9110595900.

Adding to 22404556 its reverse (65540422), we get a palindrome (87944978).

The spelling of 22404556 in words is "twenty-two million, four hundred four thousand, five hundred fifty-six".