18162232 has 32 divisors (see below), whose sum is σ = 37396080. Its totient is φ = 8200960.

The previous prime is 18162217. The next prime is 18162259. The reversal of 18162232 is 23226181.

It is a junction number, because it is equal to n+sod(n) for n = 18162197 and 18162206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14628 + ... + 15820.

Almost surely, 2^18162232 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 18162232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18698040).

18162232 is an abundant number, since it is smaller than the sum of its proper divisors (19233848).

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

18162232 is a wasteful number, since it uses less digits than its factorization.

18162232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383 (or 1379 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 18162232 is about 4261.7170248622. The cubic root of 18162232 is about 262.8591341329.

The spelling of 18162232 in words is "eighteen million, one hundred sixty-two thousand, two hundred thirty-two".