204135252 has 48 divisors (see below), whose sum is σ = 505717632. Its totient is φ = 63866880.

The previous prime is 204135209. The next prime is 204135271. The reversal of 204135252 is 252531402.

204135252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×204135252² = 83342402218207008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87177 + ... + 89487.

It is an arithmetic number, because the mean of its divisors is an integer number (10535784).

Almost surely, 2^204135252 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 204135252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252858816).

204135252 is an abundant number, since it is smaller than the sum of its proper divisors (301582380).

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

204135252 is a wasteful number, since it uses less digits than its factorization.

204135252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 204135252 is about 14287.5908396062. The cubic root of 204135252 is about 588.8066004609.

Adding to 204135252 its reverse (252531402), we get a palindrome (456666654).

The spelling of 204135252 in words is "two hundred four million, one hundred thirty-five thousand, two hundred fifty-two".