200385 has 24 divisors (see below), whose sum is σ = 357864. Its totient is φ = 103680.

The previous prime is 200383. The next prime is 200401. The reversal of 200385 is 583002.

It can be written as a sum of positive squares in 4 ways, for example, as 576 + 199809 = 24^2 + 447^2 .

It is not a de Polignac number, because 200385 - 2¹ = 200383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2709 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (14911).

2²⁰⁰³⁸⁵ is an apocalyptic number.

It is an amenable number.

200385 is a deficient number, since it is larger than the sum of its proper divisors (157479).

200385 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (200384) it forms an eRAP, since the sums of their prime factors are consecutive (144 and 145).

200385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 200385 is about 447.6438316340. The cubic root of 200385 is about 58.5178556058.

Adding to 200385 its reverse (583002), we get a palindrome (783387).

It can be divided in two parts, 200 and 385, that added together give a palindrome (585).

The spelling of 200385 in words is "two hundred thousand, three hundred eighty-five".