204729428 has 6 divisors (see below), whose sum is σ = 358276506. Its totient is φ = 102364712.

The previous prime is 204729401. The next prime is 204729431. The reversal of 204729428 is 824927402.

204729428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 104489284 + 100240144 = 10222^2 + 10012^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204729391 and 204729400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25591175 + ... + 25591182.

It is an arithmetic number, because the mean of its divisors is an integer number (59712751).

Almost surely, 2^204729428 is an apocalyptic number.

It is an amenable number.

204729428 is a deficient number, since it is larger than the sum of its proper divisors (153547078).

204729428 is a wasteful number, since it uses less digits than its factorization.

204729428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51182361 (or 51182359 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 204729428 is about 14308.3691593417. The cubic root of 204729428 is about 589.3773264127.

The spelling of 204729428 in words is "two hundred four million, seven hundred twenty-nine thousand, four hundred twenty-eight".