18329712 has 40 divisors (see below), whose sum is σ = 49413504. Its totient is φ = 5843904.

The previous prime is 18329693. The next prime is 18329713. The reversal of 18329712 is 21792381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18329713) 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 7 ways as a sum of consecutive naturals, for example, 7198 + ... + 9405.

Almost surely, 2^18329712 is an apocalyptic number.

18329712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18329712 is an abundant number, since it is smaller than the sum of its proper divisors (31083792).

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

18329712 is a wasteful number, since it uses less digits than its factorization.

18329712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16637 (or 16631 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 18329712 is about 4281.3212913772. The cubic root of 18329712 is about 263.6646338437.

The spelling of 18329712 in words is "eighteen million, three hundred twenty-nine thousand, seven hundred twelve".