204352405 has 8 divisors (see below), whose sum is σ = 251204184. Its totient is φ = 159494400.

The previous prime is 204352373. The next prime is 204352433. The reversal of 204352405 is 504253402.

204352405 is digitally balanced in base 2, 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 4 ways, for example, as 9498724 + 194853681 = 3082^2 + 13959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204352405 - 2⁵ = 204352373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204352405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498216 + ... + 498625.

It is an arithmetic number, because the mean of its divisors is an integer number (31400523).

Almost surely, 2^204352405 is an apocalyptic number.

It is an amenable number.

204352405 is a deficient number, since it is larger than the sum of its proper divisors (46851779).

204352405 is an equidigital number, since it uses as much as digits as its factorization.

204352405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996887.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 204352405 is about 14295.1881764459. The cubic root of 204352405 is about 589.0153114453.

The spelling of 204352405 in words is "two hundred four million, three hundred fifty-two thousand, four hundred five".