22404322 has 4 divisors (see below), whose sum is σ = 33606486. Its totient is φ = 11202160.

The previous prime is 22404307. The next prime is 22404329. The reversal of 22404322 is 22340422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16248961 + 6155361 = 4031^2 + 2481^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22404322.

It is not an unprimeable number, because it can be changed into a prime (22404329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601079 + ... + 5601082.

Almost surely, 2^22404322 is an apocalyptic number.

22404322 is a deficient number, since it is larger than the sum of its proper divisors (11202164).

22404322 is a wasteful number, since it uses less digits than its factorization.

22404322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11202163.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22404322 is about 4733.3203990434. The cubic root of 22404322 is about 281.9100781316.

Adding to 22404322 its reverse (22340422), we get a palindrome (44744744).

The spelling of 22404322 in words is "twenty-two million, four hundred four thousand, three hundred twenty-two".