22404413 has 4 divisors (see below), whose sum is σ = 23127168. Its totient is φ = 21681660.

The previous prime is 22404391. The next prime is 22404427. The reversal of 22404413 is 31440422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22404413 - 2²⁰ = 21355837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22404463) 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, 361331 + ... + 361392.

It is an arithmetic number, because the mean of its divisors is an integer number (5781792).

Almost surely, 2^22404413 is an apocalyptic number.

It is an amenable number.

22404413 is a deficient number, since it is larger than the sum of its proper divisors (722755).

22404413 is an equidigital number, since it uses as much as digits as its factorization.

22404413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722754.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22404413 is about 4733.3300117359. The cubic root of 22404413 is about 281.9104598107.

Adding to 22404413 its reverse (31440422), we get a palindrome (53844835).

The spelling of 22404413 in words is "twenty-two million, four hundred four thousand, four hundred thirteen".