18033066 has 24 divisors (see below), whose sum is σ = 39243204. Its totient is φ = 5984640.

The previous prime is 18033061. The next prime is 18033079. The reversal of 18033066 is 66033081.

It can be written as a sum of positive squares in 2 ways, for example, as 17816841 + 216225 = 4221^2 + 465^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18033061) 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 11 ways as a sum of consecutive naturals, for example, 2260 + ... + 6416.

Almost surely, 2^18033066 is an apocalyptic number.

18033066 is an abundant number, since it is smaller than the sum of its proper divisors (21210138).

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

18033066 is a wasteful number, since it uses less digits than its factorization.

18033066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406 (or 4403 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 18033066 is about 4246.5357645968. The cubic root of 18033066 is about 262.2345179872.

The spelling of 18033066 in words is "eighteen million, thirty-three thousand, sixty-six".