18317230 has 8 divisors (see below), whose sum is σ = 32971032. Its totient is φ = 7326888.

The previous prime is 18317207. The next prime is 18317231. The reversal of 18317230 is 3271381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18317195 and 18317204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18317231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915852 + ... + 915871.

It is an arithmetic number, because the mean of its divisors is an integer number (4121379).

Almost surely, 2^18317230 is an apocalyptic number.

18317230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18317230 is a deficient number, since it is larger than the sum of its proper divisors (14653802).

18317230 is a wasteful number, since it uses less digits than its factorization.

18317230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831730.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 18317230 is about 4279.8633155745. The cubic root of 18317230 is about 263.6047709413.

The spelling of 18317230 in words is "eighteen million, three hundred seventeen thousand, two hundred thirty".