204216771 has 16 divisors (see below), whose sum is σ = 297383040. Its totient is φ = 123625920.

The previous prime is 204216763. The next prime is 204216773. The reversal of 204216771 is 177612402.

It is not a de Polignac number, because 204216771 - 2³ = 204216763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204216773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30591 + ... + 36663.

It is an arithmetic number, because the mean of its divisors is an integer number (18586440).

Almost surely, 2^204216771 is an apocalyptic number.

204216771 is a deficient number, since it is larger than the sum of its proper divisors (93166269).

204216771 is a wasteful number, since it uses less digits than its factorization.

204216771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7106.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 204216771 is about 14290.4433451170. The cubic root of 204216771 is about 588.8849676822.

The spelling of 204216771 in words is "two hundred four million, two hundred sixteen thousand, seven hundred seventy-one".