18033000 has 64 divisors (see below), whose sum is σ = 56272320. Its totient is φ = 4808000.

The previous prime is 18032969. The next prime is 18033011. The reversal of 18033000 is 33081.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 6 + ... + 6005.

It is an arithmetic number, because the mean of its divisors is an integer number (879255).

Almost surely, 2^18033000 is an apocalyptic number.

18033000 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 18033000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28136160).

18033000 is an abundant number, since it is smaller than the sum of its proper divisors (38239320).

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

18033000 is a wasteful number, since it uses less digits than its factorization.

18033000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6035 (or 6021 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 18033000 is about 4246.5279935496. The cubic root of 18033000 is about 262.2341980656.

Adding to 18033000 its sum of digits (15), we get a triangular number (18033015 = T₆₀₀₅).

Adding to 18033000 its reverse (33081), we get a palindrome (18066081).

The spelling of 18033000 in words is "eighteen million, thirty-three thousand".