204528580 has 12 divisors (see below), whose sum is σ = 429510060. Its totient is φ = 81811424.

The previous prime is 204528539. The next prime is 204528587. The reversal of 204528580 is 85825402.

It can be written as a sum of positive squares in 2 ways, for example, as 89567296 + 114961284 = 9464^2 + 10722^2 .

It is not an unprimeable number, because it can be changed into a prime (204528587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5113195 + ... + 5113234.

It is an arithmetic number, because the mean of its divisors is an integer number (35792505).

Almost surely, 2^204528580 is an apocalyptic number.

204528580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204528580 is an abundant number, since it is smaller than the sum of its proper divisors (224981480).

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

204528580 is a wasteful number, since it uses less digits than its factorization.

204528580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10226438 (or 10226436 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 204528580 is about 14301.3488874302. The cubic root of 204528580 is about 589.1845288752.

It can be divided in two parts, 2045 and 28580, that added together give a square (30625 = 175²).

The spelling of 204528580 in words is "two hundred four million, five hundred twenty-eight thousand, five hundred eighty".