205013847 has 16 divisors (see below), whose sum is σ = 283171680. Its totient is φ = 131779200.

The previous prime is 205013843. The next prime is 205013869. The reversal of 205013847 is 748310502.

It is not a de Polignac number, because 205013847 - 2² = 205013843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205013843) 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 15 ways as a sum of consecutive naturals, for example, 91197 + ... + 93417.

It is an arithmetic number, because the mean of its divisors is an integer number (17698230).

Almost surely, 2^205013847 is an apocalyptic number.

205013847 is a deficient number, since it is larger than the sum of its proper divisors (78157833).

205013847 is a wasteful number, since it uses less digits than its factorization.

205013847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 205013847 is about 14318.3046133263. The cubic root of 205013847 is about 589.6501296356.

The spelling of 205013847 in words is "two hundred five million, thirteen thousand, eight hundred forty-seven".