22022318 has 4 divisors (see below), whose sum is σ = 33033480. Its totient is φ = 11011158.

The previous prime is 22022309. The next prime is 22022323. The reversal of 22022318 is 81322022.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22022318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505578 + ... + 5505581.

It is an arithmetic number, because the mean of its divisors is an integer number (8258370).

Almost surely, 2^22022318 is an apocalyptic number.

22022318 is a deficient number, since it is larger than the sum of its proper divisors (11011162).

22022318 is a wasteful number, since it uses less digits than its factorization.

22022318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11011161.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 22022318 is about 4692.7942635492. The cubic root of 22022318 is about 280.2986524278.

The spelling of 22022318 in words is "twenty-two million, twenty-two thousand, three hundred eighteen".