204788668 has 12 divisors (see below), whose sum is σ = 409577392. Its totient is φ = 87766560.

The previous prime is 204788629. The next prime is 204788687. The reversal of 204788668 is 866887402.

204788668 is an admirable number.

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, 3656913 + ... + 3656968.

Almost surely, 2^204788668 is an apocalyptic number.

204788668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

204788668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

204788668 is a wasteful number, since it uses less digits than its factorization.

204788668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7313892 (or 7313890 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 49.

The square root of 204788668 is about 14310.4391267354. The cubic root of 204788668 is about 589.4341678515.

The spelling of 204788668 in words is "two hundred four million, seven hundred eighty-eight thousand, six hundred sixty-eight".