206856252 has 72 divisors (see below), whose sum is σ = 534957696. Its totient is φ = 67380384.

The previous prime is 206856241. The next prime is 206856311. The reversal of 206856252 is 252658602.

206856252 is a `hidden beast` number, since 20 + 6 + 8 + 5 + 625 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 319393 + ... + 320039.

It is an arithmetic number, because the mean of its divisors is an integer number (7429968).

Almost surely, 2^206856252 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 206856252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267478848).

206856252 is an abundant number, since it is smaller than the sum of its proper divisors (328101444).

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

206856252 is a wasteful number, since it uses less digits than its factorization.

206856252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 206856252 is about 14382.4981140273. The cubic root of 206856252 is about 591.4112077198.

The spelling of 206856252 in words is "two hundred six million, eight hundred fifty-six thousand, two hundred fifty-two".