18210112 has 56 divisors (see below), whose sum is σ = 38404800. Its totient is φ = 8549376.

The previous prime is 18210083. The next prime is 18210119. The reversal of 18210112 is 21101281.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18210119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130939 + ... + 131077.

It is an arithmetic number, because the mean of its divisors is an integer number (685800).

Almost surely, 2^18210112 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 18210112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19202400).

18210112 is an abundant number, since it is smaller than the sum of its proper divisors (20194688).

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

18210112 is a wasteful number, since it uses less digits than its factorization.

18210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 18210112 is about 4267.3307816479. The cubic root of 18210112 is about 263.0899180269.

Adding to 18210112 its reverse (21101281), we get a palindrome (39311393).

The spelling of 18210112 in words is "eighteen million, two hundred ten thousand, one hundred twelve".