205726 has 8 divisors (see below), whose sum is σ = 319320. Its totient is φ = 99288.

The previous prime is 205721. The next prime is 205759. The reversal of 205726 is 627502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2⁷ + 0 + 7⁶ + 5⁷ + 2¹¹ + 6⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 205697 and 205706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1716 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (39915).

2²⁰⁵⁷²⁶ is an apocalyptic number.

205726 is a deficient number, since it is larger than the sum of its proper divisors (113594).

205726 is a wasteful number, since it uses less digits than its factorization.

205726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 205726 is about 453.5702812134. The cubic root of 205726 is about 59.0332093036.

The spelling of 205726 in words is "two hundred five thousand, seven hundred twenty-six".