204726261 has 4 divisors (see below), whose sum is σ = 272968352. Its totient is φ = 136484172.

The previous prime is 204726259. The next prime is 204726317. The reversal of 204726261 is 162627402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 204726261 - 2¹ = 204726259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204726211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34121041 + ... + 34121046.

It is an arithmetic number, because the mean of its divisors is an integer number (68242088).

Almost surely, 2^204726261 is an apocalyptic number.

It is an amenable number.

204726261 is a deficient number, since it is larger than the sum of its proper divisors (68242091).

204726261 is an equidigital number, since it uses as much as digits as its factorization.

204726261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68242090.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 204726261 is about 14308.2584894179. The cubic root of 204726261 is about 589.3742873322.

The spelling of 204726261 in words is "two hundred four million, seven hundred twenty-six thousand, two hundred sixty-one".