18430332 has 12 divisors (see below), whose sum is σ = 43004136. Its totient is φ = 6143440.

The previous prime is 18430327. The next prime is 18430333. The reversal of 18430332 is 23303481.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18430333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767919 + ... + 767942.

It is an arithmetic number, because the mean of its divisors is an integer number (3583678).

Almost surely, 2^18430332 is an apocalyptic number.

18430332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18430332 is an abundant number, since it is smaller than the sum of its proper divisors (24573804).

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

18430332 is a wasteful number, since it uses less digits than its factorization.

18430332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535868 (or 1535866 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 18430332 is about 4293.0562539990. The cubic root of 18430332 is about 264.1462114787.

The spelling of 18430332 in words is "eighteen million, four hundred thirty thousand, three hundred thirty-two".