385218 has 12 divisors (see below), whose sum is σ = 834678. Its totient is φ = 128400.

The previous prime is 385199. The next prime is 385223. The reversal of 385218 is 812583.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 363609 + 21609 = 603^2 + 147^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 385191 and 385200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10683 + ... + 10718.

2³⁸⁵²¹⁸ is an apocalyptic number.

385218 is an abundant number, since it is smaller than the sum of its proper divisors (449460).

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

385218 is a wasteful number, since it uses less digits than its factorization.

385218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21409 (or 21406 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 385218 is about 620.6593268453. The cubic root of 385218 is about 72.7615916627.

The spelling of 385218 in words is "three hundred eighty-five thousand, two hundred eighteen".