204661984 has 24 divisors (see below), whose sum is σ = 406501200. Its totient is φ = 101423616.

The previous prime is 204661967. The next prime is 204661999. The reversal of 204661984 is 489166402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24684 + ... + 31915.

It is an arithmetic number, because the mean of its divisors is an integer number (16937550).

Almost surely, 2^204661984 is an apocalyptic number.

It is an amenable number.

204661984 is a deficient number, since it is larger than the sum of its proper divisors (201839216).

204661984 is a wasteful number, since it uses less digits than its factorization.

204661984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56722 (or 56714 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 204661984 is about 14306.0121627238. The cubic root of 204661984 is about 589.3125997952.

The spelling of 204661984 in words is "two hundred four million, six hundred sixty-one thousand, nine hundred eighty-four".