204564156 has 12 divisors (see below), whose sum is σ = 477316392. Its totient is φ = 68188048.

The previous prime is 204564149. The next prime is 204564161. The reversal of 204564156 is 651465402.

204564156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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, 8523495 + ... + 8523518.

It is an arithmetic number, because the mean of its divisors is an integer number (39776366).

Almost surely, 2^204564156 is an apocalyptic number.

It is an amenable number.

204564156 is an abundant number, since it is smaller than the sum of its proper divisors (272752236).

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

204564156 is a wasteful number, since it uses less digits than its factorization.

204564156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17047020 (or 17047018 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 204564156 is about 14302.5926321069. The cubic root of 204564156 is about 589.2186881006.

The spelling of 204564156 in words is "two hundred four million, five hundred sixty-four thousand, one hundred fifty-six".