204427361 has 4 divisors (see below), whose sum is σ = 211021824. Its totient is φ = 197832900.

The previous prime is 204427313. The next prime is 204427367. The reversal of 204427361 is 163724402.

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, and also an emirpimes, since its reverse is a distinct semiprime: 163724402 = 2 ⋅81862201.

It is a cyclic number.

It is not a de Polignac number, because 204427361 - 2¹⁸ = 204165217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204427367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3297185 + ... + 3297246.

It is an arithmetic number, because the mean of its divisors is an integer number (52755456).

Almost surely, 2^204427361 is an apocalyptic number.

It is an amenable number.

204427361 is a deficient number, since it is larger than the sum of its proper divisors (6594463).

204427361 is an equidigital number, since it uses as much as digits as its factorization.

204427361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6594462.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 204427361 is about 14297.8096574266. The cubic root of 204427361 is about 589.0873191366.

The spelling of 204427361 in words is "two hundred four million, four hundred twenty-seven thousand, three hundred sixty-one".