18332112 has 40 divisors (see below), whose sum is σ = 49852960. Its totient is φ = 5788800.

The previous prime is 18332101. The next prime is 18332113. The reversal of 18332112 is 21123381.

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 (18332113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9139 + ... + 10962.

It is an arithmetic number, because the mean of its divisors is an integer number (1246324).

Almost surely, 2^18332112 is an apocalyptic number.

18332112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18332112 is an abundant number, since it is smaller than the sum of its proper divisors (31520848).

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

18332112 is a wasteful number, since it uses less digits than its factorization.

18332112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20131 (or 20125 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 18332112 is about 4281.6015695064. The cubic root of 18332112 is about 263.6761409804.

Adding to 18332112 its reverse (21123381), we get a palindrome (39455493).

The spelling of 18332112 in words is "eighteen million, three hundred thirty-two thousand, one hundred twelve".