205928871 has 8 divisors (see below), whose sum is σ = 290723184. Its totient is φ = 129210240.

The previous prime is 205928861. The next prime is 205928873. The reversal of 205928871 is 178829502.

205928871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 205928871 - 2¹⁰ = 205927847 is a prime.

It is a super-2 number, since 2×205928871² = 84813399822669282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205928873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2018860 + ... + 2018961.

It is an arithmetic number, because the mean of its divisors is an integer number (36340398).

Almost surely, 2^205928871 is an apocalyptic number.

205928871 is a deficient number, since it is larger than the sum of its proper divisors (84794313).

205928871 is a wasteful number, since it uses less digits than its factorization.

205928871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037841.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 205928871 is about 14350.2219843457. The cubic root of 205928871 is about 590.5260758371.

The spelling of 205928871 in words is "two hundred five million, nine hundred twenty-eight thousand, eight hundred seventy-one".