22804394 has 4 divisors (see below), whose sum is σ = 34206594. Its totient is φ = 11402196.

The previous prime is 22804393. The next prime is 22804403. The reversal of 22804394 is 49340822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49340822 = 2 ⋅24670411.

It can be written as a sum of positive squares in only one way, i.e., 14025025 + 8779369 = 3745^2 + 2963^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22804394.

It is not an unprimeable number, because it can be changed into a prime (22804391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5701097 + ... + 5701100.

Almost surely, 2^22804394 is an apocalyptic number.

22804394 is a deficient number, since it is larger than the sum of its proper divisors (11402200).

22804394 is a wasteful number, since it uses less digits than its factorization.

22804394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11402199.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 22804394 is about 4775.3946433777. The cubic root of 22804394 is about 283.5782024608.

The spelling of 22804394 in words is "twenty-two million, eight hundred four thousand, three hundred ninety-four".