204209532 has 96 divisors (see below), whose sum is σ = 553492800. Its totient is φ = 65028096.

The previous prime is 204209513. The next prime is 204209539. The reversal of 204209532 is 235902402.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 204209496 and 204209505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204209539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 353628 + ... + 354204.

It is an arithmetic number, because the mean of its divisors is an integer number (5765550).

Almost surely, 2^204209532 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 204209532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276746400).

204209532 is an abundant number, since it is smaller than the sum of its proper divisors (349283268).

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

204209532 is a wasteful number, since it uses less digits than its factorization.

204209532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 204209532 is about 14290.1900617172. The cubic root of 204209532 is about 588.8780094083.

The spelling of 204209532 in words is "two hundred four million, two hundred nine thousand, five hundred thirty-two".