18330736 has 20 divisors (see below), whose sum is σ = 35656200. Its totient is φ = 9129152.

The previous prime is 18330733. The next prime is 18330749. The reversal of 18330736 is 63703381.

It is a junction number, because it is equal to n+sod(n) for n = 18330698 and 18330707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18330733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175 + ... + 6433.

It is an arithmetic number, because the mean of its divisors is an integer number (1782810).

Almost surely, 2^18330736 is an apocalyptic number.

18330736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18330736 is a deficient number, since it is larger than the sum of its proper divisors (17325464).

18330736 is a wasteful number, since it uses less digits than its factorization.

18330736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536 (or 4530 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 18330736 is about 4281.4408789565. The cubic root of 18330736 is about 263.6695436782.

The spelling of 18330736 in words is "eighteen million, three hundred thirty thousand, seven hundred thirty-six".