22444418 has 4 divisors (see below), whose sum is σ = 33666630. Its totient is φ = 11222208.

The previous prime is 22444393. The next prime is 22444423. The reversal of 22444418 is 81444422.

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., 14190289 + 8254129 = 3767^2 + 2873^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611103 + ... + 5611106.

Almost surely, 2^22444418 is an apocalyptic number.

22444418 is a deficient number, since it is larger than the sum of its proper divisors (11222212).

22444418 is a wasteful number, since it uses less digits than its factorization.

22444418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11222211.

The product of its digits is 8192, while the sum is 29.

The square root of 22444418 is about 4737.5540102462. The cubic root of 22444418 is about 282.0781518049.

The spelling of 22444418 in words is "twenty-two million, four hundred forty-four thousand, four hundred eighteen".