18324100 has 72 divisors (see below), whose sum is σ = 42997248. Its totient is φ = 6758400.

The previous prime is 18324083. The next prime is 18324101. The reversal of 18324100 is 142381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18324101) 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 23 ways as a sum of consecutive naturals, for example, 71172 + ... + 71428.

It is an arithmetic number, because the mean of its divisors is an integer number (597184).

Almost surely, 2^18324100 is an apocalyptic number.

18324100 is a gapful number since it is divisible by the number (10) 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 18324100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21498624).

18324100 is an abundant number, since it is smaller than the sum of its proper divisors (24673148).

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

18324100 is a wasteful number, since it uses less digits than its factorization.

18324100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 18324100 is about 4280.6658360587. The cubic root of 18324100 is about 263.6377224014.

Adding to 18324100 its reverse (142381), we get a palindrome (18466481).

The spelling of 18324100 in words is "eighteen million, three hundred twenty-four thousand, one hundred".