18130336 has 48 divisors (see below), whose sum is σ = 42215040. Its totient is φ = 7499520.

The previous prime is 18130309. The next prime is 18130349. The reversal of 18130336 is 63303181.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18130336.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5101 + ... + 7891.

It is an arithmetic number, because the mean of its divisors is an integer number (879480).

Almost surely, 2^18130336 is an apocalyptic number.

18130336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18130336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21107520).

18130336 is an abundant number, since it is smaller than the sum of its proper divisors (24084704).

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

18130336 is a wasteful number, since it uses less digits than its factorization.

18130336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837 (or 2829 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 18130336 is about 4257.9732267829. The cubic root of 18130336 is about 262.7051686999.

The spelling of 18130336 in words is "eighteen million, one hundred thirty thousand, three hundred thirty-six".