204129320 has 16 divisors (see below), whose sum is σ = 459291060. Its totient is φ = 81651712.

The previous prime is 204129311. The next prime is 204129349. The reversal of 204129320 is 23921402.

204129320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 194156356 + 9972964 = 13934^2 + 3158^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2551577 + ... + 2551656.

Almost surely, 2^204129320 is an apocalyptic number.

204129320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204129320 is an abundant number, since it is smaller than the sum of its proper divisors (255161740).

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

204129320 is a wasteful number, since it uses less digits than its factorization.

204129320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103244 (or 5103240 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 204129320 is about 14287.3832453672. The cubic root of 204129320 is about 588.8008969962.

The spelling of 204129320 in words is "two hundred four million, one hundred twenty-nine thousand, three hundred twenty".