18522112 has 112 divisors (see below), whose sum is σ = 47183040. Its totient is φ = 7077888.

The previous prime is 18522073. The next prime is 18522139. The reversal of 18522112 is 21122581.

It is a tau number, because it is divible by the number of its divisors (112).

It is a zygodrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974839 + ... + 974857.

Almost surely, 2^18522112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18522112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23591520).

18522112 is an abundant number, since it is smaller than the sum of its proper divisors (28660928).

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

18522112 is an equidigital number, since it uses as much as digits as its factorization.

18522112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 45 counting only the distinct ones).

The product of its digits is 320, while the sum is 22.

The square root of 18522112 is about 4303.7323336843. The cubic root of 18522112 is about 264.5839537768.

Adding to 18522112 its reverse (21122581), we get a palindrome (39644693).

The spelling of 18522112 in words is "eighteen million, five hundred twenty-two thousand, one hundred twelve".