18182232 has 96 divisors (see below), whose sum is σ = 52416000. Its totient is φ = 5901984.

The previous prime is 18182201. The next prime is 18182251. The reversal of 18182232 is 23228181.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a junction number, because it is equal to n+sod(n) for n = 18182196 and 18182205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91269 + ... + 91467.

It is an arithmetic number, because the mean of its divisors is an integer number (546000).

Almost surely, 2^18182232 is an apocalyptic number.

18182232 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 18182232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26208000).

18182232 is an abundant number, since it is smaller than the sum of its proper divisors (34233768).

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

18182232 is a wasteful number, since it uses less digits than its factorization.

18182232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 251 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 18182232 is about 4264.0628513192. The cubic root of 18182232 is about 262.9555843590.

The spelling of 18182232 in words is "eighteen million, one hundred eighty-two thousand, two hundred thirty-two".