205852856 has 64 divisors (see below), whose sum is σ = 436700160. Its totient is φ = 90160000.

The previous prime is 205852849. The next prime is 205852879. The reversal of 205852856 is 658258502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293306 + ... + 294006.

It is an arithmetic number, because the mean of its divisors is an integer number (6823440).

Almost surely, 2^205852856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205852856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218350080).

205852856 is an abundant number, since it is smaller than the sum of its proper divisors (230847304).

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

205852856 is a wasteful number, since it uses less digits than its factorization.

205852856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 41.

The square root of 205852856 is about 14347.5731745825. The cubic root of 205852856 is about 590.4534061431.

The spelling of 205852856 in words is "two hundred five million, eight hundred fifty-two thousand, eight hundred fifty-six".