18227322 has 16 divisors (see below), whose sum is σ = 40505280. Its totient is φ = 6075756.

The previous prime is 18227317. The next prime is 18227323. The reversal of 18227322 is 22372281.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18227323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168718 + ... + 168825.

It is an arithmetic number, because the mean of its divisors is an integer number (2531580).

Almost surely, 2^18227322 is an apocalyptic number.

18227322 is an abundant number, since it is smaller than the sum of its proper divisors (22277958).

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

18227322 is a wasteful number, since it uses less digits than its factorization.

18227322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337554 (or 337548 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 18227322 is about 4269.3467884443. The cubic root of 18227322 is about 263.1727722101.

The spelling of 18227322 in words is "eighteen million, two hundred twenty-seven thousand, three hundred twenty-two".