205010992 has 20 divisors (see below), whose sum is σ = 405661536. Its totient is φ = 100324160.

The previous prime is 205010987. The next prime is 205010999. The reversal of 205010992 is 299010502.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 205010992.

It is not an unprimeable number, because it can be changed into a prime (205010999) 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, 135559 + ... + 137062.

Almost surely, 2^205010992 is an apocalyptic number.

It is an amenable number.

205010992 is a deficient number, since it is larger than the sum of its proper divisors (200650544).

205010992 is a wasteful number, since it uses less digits than its factorization.

205010992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272676 (or 272670 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 205010992 is about 14318.2049154215. The cubic root of 205010992 is about 589.6473924888.

The spelling of 205010992 in words is "two hundred five million, ten thousand, nine hundred ninety-two".