18411222 has 16 divisors (see below), whose sum is σ = 36877680. Its totient is φ = 6127872.

The previous prime is 18411199. The next prime is 18411229. The reversal of 18411222 is 22211481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18411229) 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, 2958 + ... + 6750.

It is an arithmetic number, because the mean of its divisors is an integer number (2304855).

Almost surely, 2^18411222 is an apocalyptic number.

18411222 is an abundant number, since it is smaller than the sum of its proper divisors (18466458).

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

18411222 is a wasteful number, since it uses less digits than its factorization.

18411222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607.

The product of its digits is 256, while the sum is 21.

The square root of 18411222 is about 4290.8299896407. The cubic root of 18411222 is about 264.0548841355.

The spelling of 18411222 in words is "eighteen million, four hundred eleven thousand, two hundred twenty-two".