205742764 has 12 divisors (see below), whose sum is σ = 362678904. Its totient is φ = 102120224.

The previous prime is 205742749. The next prime is 205742783. The reversal of 205742764 is 467247502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187174 + ... + 188269.

It is an arithmetic number, because the mean of its divisors is an integer number (30223242).

Almost surely, 2^205742764 is an apocalyptic number.

It is an amenable number.

205742764 is a deficient number, since it is larger than the sum of its proper divisors (156936140).

205742764 is a wasteful number, since it uses less digits than its factorization.

205742764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375584 (or 375582 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 205742764 is about 14343.7360544595. The cubic root of 205742764 is about 590.3481274028.

The spelling of 205742764 in words is "two hundred five million, seven hundred forty-two thousand, seven hundred sixty-four".