204049986 has 32 divisors (see below), whose sum is σ = 467026560. Its totient is φ = 58221696.

The previous prime is 204049961. The next prime is 204050009. The reversal of 204049986 is 689940402.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33160 + ... + 38828.

It is an arithmetic number, because the mean of its divisors is an integer number (14594580).

Almost surely, 2^204049986 is an apocalyptic number.

204049986 is an abundant number, since it is smaller than the sum of its proper divisors (262976574).

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

204049986 is a wasteful number, since it uses less digits than its factorization.

204049986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6538.

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

The square root of 204049986 is about 14284.6066099140. The cubic root of 204049986 is about 588.7246087832.

The spelling of 204049986 in words is "two hundred four million, forty-nine thousand, nine hundred eighty-six".