204185712 has 20 divisors (see below), whose sum is σ = 527479880. Its totient is φ = 68061888.

The previous prime is 204185693. The next prime is 204185717. The reversal of 204185712 is 217581402.

It is a self number, because there is not a number n which added to its sum of digits gives 204185712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204185717) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2126887 + ... + 2126982.

It is an arithmetic number, because the mean of its divisors is an integer number (26373994).

Almost surely, 2^204185712 is an apocalyptic number.

It is an amenable number.

204185712 is an abundant number, since it is smaller than the sum of its proper divisors (323294168).

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

204185712 is a wasteful number, since it uses less digits than its factorization.

204185712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4253880 (or 4253874 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 204185712 is about 14289.3565985316. The cubic root of 204185712 is about 588.8551119796.

The spelling of 204185712 in words is "two hundred four million, one hundred eighty-five thousand, seven hundred twelve".