206726772 has 96 divisors (see below), whose sum is σ = 564480000. Its totient is φ = 57670272.

The previous prime is 206726771. The next prime is 206726789. The reversal of 206726772 is 277627602.

It is a self number, because there is not a number n which added to its sum of digits gives 206726772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206726771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1038729 + ... + 1038927.

It is an arithmetic number, because the mean of its divisors is an integer number (5880000).

Almost surely, 2^206726772 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 206726772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282240000).

206726772 is an abundant number, since it is smaller than the sum of its proper divisors (357753228).

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

206726772 is a wasteful number, since it uses less digits than its factorization.

206726772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 39.

The square root of 206726772 is about 14377.9961051601. The cubic root of 206726772 is about 591.2877856085.

The spelling of 206726772 in words is "two hundred six million, seven hundred twenty-six thousand, seven hundred seventy-two".