204517994 has 16 divisors (see below), whose sum is σ = 312408576. Its totient is φ = 100388400.

The previous prime is 204517993. The next prime is 204517997. The reversal of 204517994 is 499715402.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204517993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77639 + ... + 80229.

It is an arithmetic number, because the mean of its divisors is an integer number (19525536).

Almost surely, 2^204517994 is an apocalyptic number.

204517994 is a deficient number, since it is larger than the sum of its proper divisors (107890582).

204517994 is a wasteful number, since it uses less digits than its factorization.

204517994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 204517994 is about 14300.9787776921. The cubic root of 204517994 is about 589.1743636862.

The spelling of 204517994 in words is "two hundred four million, five hundred seventeen thousand, nine hundred ninety-four".