22244218 has 8 divisors (see below), whose sum is σ = 34516980. Its totient is φ = 10738560.

The previous prime is 22244203. The next prime is 22244219. The reversal of 22244218 is 81244222.

It can be written as a sum of positive squares in 2 ways, for example, as 20820969 + 1423249 = 4563^2 + 1193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22244192 and 22244201.

It is not an unprimeable number, because it can be changed into a prime (22244219) 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, 191703 + ... + 191818.

Almost surely, 2^22244218 is an apocalyptic number.

22244218 is a deficient number, since it is larger than the sum of its proper divisors (12272762).

22244218 is a wasteful number, since it uses less digits than its factorization.

22244218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383552.

The product of its digits is 2048, while the sum is 25.

The square root of 22244218 is about 4716.3776354317. The cubic root of 22244218 is about 281.2369509666.

The spelling of 22244218 in words is "twenty-two million, two hundred forty-four thousand, two hundred eighteen".