383218 has 8 divisors (see below), whose sum is σ = 627120. Its totient is φ = 174180.

The previous prime is 383179. The next prime is 383219. The reversal of 383218 is 812383.

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 383192 and 383201.

It is not an unprimeable number, because it can be changed into a prime (383219) by changing a digit.

383218 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 8688 + ... + 8731.

It is an arithmetic number, because the mean of its divisors is an integer number (78390).

2³⁸³²¹⁸ is an apocalyptic number.

383218 is a deficient number, since it is larger than the sum of its proper divisors (243902).

383218 is a wasteful number, since it uses less digits than its factorization.

383218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17432.

The product of its digits is 1152, while the sum is 25.

The square root of 383218 is about 619.0460402910. The cubic root of 383218 is about 72.6354503108.

The spelling of 383218 in words is "three hundred eighty-three thousand, two hundred eighteen".