18442112 has 32 divisors (see below), whose sum is σ = 39569880. Its totient is φ = 8510976.

The previous prime is 18442111. The next prime is 18442121. The reversal of 18442112 is 21124481.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×18442112² = 680222990041088, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18442111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3878 + ... + 7205.

Almost surely, 2^18442112 is an apocalyptic number.

It is an amenable number.

18442112 is an abundant number, since it is smaller than the sum of its proper divisors (21127768).

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

18442112 is a wasteful number, since it uses less digits than its factorization.

18442112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110 (or 11098 counting only the distinct ones).

The product of its digits is 512, while the sum is 23.

The square root of 18442112 is about 4294.4280177924. The cubic root of 18442112 is about 264.2024770532.

Adding to 18442112 its reverse (21124481), we get a palindrome (39566593).

The spelling of 18442112 in words is "eighteen million, four hundred forty-two thousand, one hundred twelve".