22022238 has 32 divisors (see below), whose sum is σ = 50561280. Its totient is φ = 6264000.

The previous prime is 22022237. The next prime is 22022257. The reversal of 22022238 is 83222022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9498 + ... + 11586.

It is an arithmetic number, because the mean of its divisors is an integer number (1580040).

Almost surely, 2^22022238 is an apocalyptic number.

22022238 is an abundant number, since it is smaller than the sum of its proper divisors (28539042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22022238 is a wasteful number, since it uses less digits than its factorization.

22022238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 22022238 is about 4692.7857398351. The cubic root of 22022238 is about 280.2983130157.

The spelling of 22022238 in words is "twenty-two million, twenty-two thousand, two hundred thirty-eight".