22226818 has 8 divisors (see below), whose sum is σ = 34489980. Its totient is φ = 10730160.

The previous prime is 22226807. The next prime is 22226833. The reversal of 22226818 is 81862222.

It can be written as a sum of positive squares in 2 ways, for example, as 21464689 + 762129 = 4633^2 + 873^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 22226818.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191553 + ... + 191668.

Almost surely, 2^22226818 is an apocalyptic number.

22226818 is a deficient number, since it is larger than the sum of its proper divisors (12263162).

22226818 is a wasteful number, since it uses less digits than its factorization.

22226818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383252.

The product of its digits is 6144, while the sum is 31.

The square root of 22226818 is about 4714.5326385550. The cubic root of 22226818 is about 281.1636015768.

The spelling of 22226818 in words is "twenty-two million, two hundred twenty-six thousand, eight hundred eighteen".