18007112 has 16 divisors (see below), whose sum is σ = 33936000. Its totient is φ = 8957520.

The previous prime is 18007111. The next prime is 18007133. The reversal of 18007112 is 21170081.

It is not an unprimeable number, because it can be changed into a prime (18007111) 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, 4064 + ... + 7247.

It is an arithmetic number, because the mean of its divisors is an integer number (2121000).

Almost surely, 2^18007112 is an apocalyptic number.

It is an amenable number.

18007112 is a deficient number, since it is larger than the sum of its proper divisors (15928888).

18007112 is a wasteful number, since it uses less digits than its factorization.

18007112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11516 (or 11512 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 18007112 is about 4243.4787615823. The cubic root of 18007112 is about 262.1086510108.

Adding to 18007112 its reverse (21170081), we get a palindrome (39177193).

The spelling of 18007112 in words is "eighteen million, seven thousand, one hundred twelve".