18236000 has 96 divisors (see below), whose sum is σ = 46230912. Its totient is φ = 7065600.

The previous prime is 18235981. The next prime is 18236017. The reversal of 18236000 is 63281.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187952 + ... + 188048.

It is an arithmetic number, because the mean of its divisors is an integer number (481572).

Almost surely, 2^18236000 is an apocalyptic number.

18236000 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 18236000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23115456).

18236000 is an abundant number, since it is smaller than the sum of its proper divisors (27994912).

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

18236000 is an equidigital number, since it uses as much as digits as its factorization.

18236000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 18236000 is about 4270.3629822300. The cubic root of 18236000 is about 263.2145309679.

Adding to 18236000 its reverse (63281), we get a palindrome (18299281).

The spelling of 18236000 in words is "eighteen million, two hundred thirty-six thousand".