18329332 has 36 divisors (see below), whose sum is σ = 39515364. Its totient is φ = 7392000.

The previous prime is 18329329. The next prime is 18329347. The reversal of 18329332 is 23392381.

It can be written as a sum of positive squares in 2 ways, for example, as 16597476 + 1731856 = 4074^2 + 1316^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18329294 and 18329303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 582 + ... + 6082.

It is an arithmetic number, because the mean of its divisors is an integer number (1097649).

Almost surely, 2^18329332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18329332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19757682).

18329332 is an abundant number, since it is smaller than the sum of its proper divisors (21186032).

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

18329332 is a wasteful number, since it uses less digits than its factorization.

18329332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536 (or 5527 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 18329332 is about 4281.2769123242. The cubic root of 18329332 is about 263.6628117883.

The spelling of 18329332 in words is "eighteen million, three hundred twenty-nine thousand, three hundred thirty-two".