18033100 has 18 divisors (see below), whose sum is σ = 39132044. Its totient is φ = 7213200.

The previous prime is 18033083. The next prime is 18033133. The reversal of 18033100 is 133081.

It is a super-2 number, since 2×18033100² = 650385391220000, which contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 90066 + ... + 90265.

Almost surely, 2^18033100 is an apocalyptic number.

18033100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18033100 is an abundant number, since it is smaller than the sum of its proper divisors (21098944).

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

18033100 is a wasteful number, since it uses less digits than its factorization.

18033100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180345 (or 180338 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 18033100 is about 4246.5397678581. The cubic root of 18033100 is about 262.2346827949.

Adding to 18033100 its reverse (133081), we get a palindrome (18166181).

The spelling of 18033100 in words is "eighteen million, thirty-three thousand, one hundred".