209852 has 12 divisors (see below), whose sum is σ = 383376. Its totient is φ = 100320.

The previous prime is 209851. The next prime is 209857. The reversal of 209852 is 258902.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209851) by changing a digit.

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, 1049 + ... + 1232.

It is an arithmetic number, because the mean of its divisors is an integer number (31948).

2²⁰⁹⁸⁵² is an apocalyptic number.

It is an amenable number.

209852 is a deficient number, since it is larger than the sum of its proper divisors (173524).

209852 is a wasteful number, since it uses less digits than its factorization.

209852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308 (or 2306 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 209852 is about 458.0960597953. The cubic root of 209852 is about 59.4252527468.

The spelling of 209852 in words is "two hundred nine thousand, eight hundred fifty-two".