204940986 has 8 divisors (see below), whose sum is σ = 409881984. Its totient is φ = 68313660.

The previous prime is 204940979. The next prime is 204941021. The reversal of 204940986 is 689049402.

It is a sphenic number, since it is the product of 3 distinct primes.

204940986 is an admirable number.

It is a Curzon 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, 17078410 + ... + 17078421.

It is an arithmetic number, because the mean of its divisors is an integer number (51235248).

Almost surely, 2^204940986 is an apocalyptic number.

204940986 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.

204940986 is a wasteful number, since it uses less digits than its factorization.

204940986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34156836.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 204940986 is about 14315.7600566648. The cubic root of 204940986 is about 589.5802683566.

The spelling of 204940986 in words is "two hundred four million, nine hundred forty thousand, nine hundred eighty-six".