18334284 has 12 divisors (see below), whose sum is σ = 42780024. Its totient is φ = 6111424.

The previous prime is 18334271. The next prime is 18334291. The reversal of 18334284 is 48243381.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×18334284² = 672291939585312, 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 3 ways as a sum of consecutive naturals, for example, 763917 + ... + 763940.

It is an arithmetic number, because the mean of its divisors is an integer number (3565002).

Almost surely, 2^18334284 is an apocalyptic number.

It is an amenable number.

18334284 is an abundant number, since it is smaller than the sum of its proper divisors (24445740).

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

18334284 is a wasteful number, since it uses less digits than its factorization.

18334284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527864 (or 1527862 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 18334284 is about 4281.8552053987. The cubic root of 18334284 is about 263.6865540734.

The spelling of 18334284 in words is "eighteen million, three hundred thirty-four thousand, two hundred eighty-four".