22404442 has 4 divisors (see below), whose sum is σ = 33606666. Its totient is φ = 11202220.

The previous prime is 22404427. The next prime is 22404463. The reversal of 22404442 is 24440422.

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., 21631801 + 772641 = 4651^2 + 879^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601109 + ... + 5601112.

Almost surely, 2^22404442 is an apocalyptic number.

22404442 is a deficient number, since it is larger than the sum of its proper divisors (11202224).

22404442 is a wasteful number, since it uses less digits than its factorization.

22404442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11202223.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 22404442 is about 4733.3330751174. Note that the first 3 decimals coincide. The cubic root of 22404442 is about 281.9105814445.

Adding to 22404442 its reverse (24440422), we get a palindrome (46844864).

The spelling of 22404442 in words is "twenty-two million, four hundred four thousand, four hundred forty-two".