205715734 has 16 divisors (see below), whose sum is σ = 364816800. Its totient is φ = 85123584.

The previous prime is 205715723. The next prime is 205715747. The reversal of 205715734 is 437517502.

205715734 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 205715734.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 252939 + ... + 253750.

It is an arithmetic number, because the mean of its divisors is an integer number (22801050).

Almost surely, 2^205715734 is an apocalyptic number.

205715734 is a deficient number, since it is larger than the sum of its proper divisors (159101066).

205715734 is a wasteful number, since it uses less digits than its factorization.

205715734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506727.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 205715734 is about 14342.7938003724. The cubic root of 205715734 is about 590.3222734215.

The spelling of 205715734 in words is "two hundred five million, seven hundred fifteen thousand, seven hundred thirty-four".