18386112 has 112 divisors (see below), whose sum is σ = 53108352. Its totient is φ = 5591040.

The previous prime is 18386107. The next prime is 18386149. The reversal of 18386112 is 21168381.

It is a super-2 number, since 2×18386112² = 676098228953088, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18386112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140287 + ... + 140417.

Almost surely, 2^18386112 is an apocalyptic number.

18386112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18386112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26554176).

18386112 is an abundant number, since it is smaller than the sum of its proper divisors (34722240).

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

18386112 is a wasteful number, since it uses less digits than its factorization.

18386112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 196 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 18386112 is about 4287.9029839771. The cubic root of 18386112 is about 263.9347864634.

The spelling of 18386112 in words is "eighteen million, three hundred eighty-six thousand, one hundred twelve".