205452 has 36 divisors (see below), whose sum is σ = 560560. Its totient is φ = 63072.

The previous prime is 205441. The next prime is 205453. The reversal of 205452 is 254502.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (205453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249 + ... + 687.

2²⁰⁵⁴⁵² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280280).

205452 is an abundant number, since it is smaller than the sum of its proper divisors (355108).

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

205452 is a wasteful number, since it uses less digits than its factorization.

205452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 205452 is about 453.2681325661. The cubic root of 205452 is about 59.0069895004.

Adding to 205452 its reverse (254502), we get a palindrome (459954).

The spelling of 205452 in words is "two hundred five thousand, four hundred fifty-two".