204468857 has 4 divisors (see below), whose sum is σ = 206078976. Its totient is φ = 202858740.

The previous prime is 204468851. The next prime is 204468893. The reversal of 204468857 is 758864402.

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 a cyclic number.

It is not a de Polignac number, because 204468857 - 2¹⁴ = 204452473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204468851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804869 + ... + 805122.

It is an arithmetic number, because the mean of its divisors is an integer number (51519744).

Almost surely, 2^204468857 is an apocalyptic number.

It is an amenable number.

204468857 is a deficient number, since it is larger than the sum of its proper divisors (1610119).

204468857 is a wasteful number, since it uses less digits than its factorization.

204468857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610118.

The product of its (nonzero) digits is 430080, while the sum is 44.

The square root of 204468857 is about 14299.2607151559. The cubic root of 204468857 is about 589.1271753696.

The spelling of 204468857 in words is "two hundred four million, four hundred sixty-eight thousand, eight hundred fifty-seven".