204995772 has 36 divisors (see below), whose sum is σ = 537378296. Its totient is φ = 68331600.

The previous prime is 204995729. The next prime is 204995779. The reversal of 204995772 is 277599402.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204995779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104479 + ... + 106422.

Almost surely, 2^204995772 is an apocalyptic number.

It is an amenable number.

204995772 is an abundant number, since it is smaller than the sum of its proper divisors (332382524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204995772 is a wasteful number, since it uses less digits than its factorization.

204995772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210920 (or 210906 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 204995772 is about 14317.6734143505. The cubic root of 204995772 is about 589.6328003356.

The spelling of 204995772 in words is "two hundred four million, nine hundred ninety-five thousand, seven hundred seventy-two".