18333996 has 24 divisors (see below), whose sum is σ = 43775424. Its totient is φ = 5969040.

The previous prime is 18333983. The next prime is 18334009. The reversal of 18333996 is 69933381.

It is an interprime number because it is at equal distance from previous prime (18333983) and next prime (18334009).

It is a super-2 number, since 2×18333996² = 672270818656032, 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 7 ways as a sum of consecutive naturals, for example, 17250 + ... + 18281.

It is an arithmetic number, because the mean of its divisors is an integer number (1823976).

Almost surely, 2^18333996 is an apocalyptic number.

It is an amenable number.

18333996 is an abundant number, since it is smaller than the sum of its proper divisors (25441428).

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

18333996 is a wasteful number, since it uses less digits than its factorization.

18333996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35581 (or 35579 counting only the distinct ones).

The product of its digits is 104976, while the sum is 42.

The square root of 18333996 is about 4281.8215749842. The cubic root of 18333996 is about 263.6851733791.

The spelling of 18333996 in words is "eighteen million, three hundred thirty-three thousand, nine hundred ninety-six".