204864894 has 24 divisors (see below), whose sum is σ = 478018632. Its totient is φ = 63035280.

The previous prime is 204864883. The next prime is 204864899. The reversal of 204864894 is 498468402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204864899) 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 11 ways as a sum of consecutive naturals, for example, 437512 + ... + 437979.

It is an arithmetic number, because the mean of its divisors is an integer number (19917443).

Almost surely, 2^204864894 is an apocalyptic number.

204864894 is an abundant number, since it is smaller than the sum of its proper divisors (273153738).

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

204864894 is a wasteful number, since it uses less digits than its factorization.

204864894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875512 (or 875509 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 204864894 is about 14313.1021794718. The cubic root of 204864894 is about 589.5072914214.

The spelling of 204864894 in words is "two hundred four million, eight hundred sixty-four thousand, eight hundred ninety-four".