204354745 has 24 divisors (see below), whose sum is σ = 286528968. Its totient is φ = 139507200.

The previous prime is 204354743. The next prime is 204354749. The reversal of 204354745 is 547453402.

204354745 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 4 ways, for example, as 16883881 + 187470864 = 4109^2 + 13692^2 .

It is not a de Polignac number, because 204354745 - 2¹ = 204354743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204354745.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204354743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57315 + ... + 60775.

It is an arithmetic number, because the mean of its divisors is an integer number (11938707).

Almost surely, 2^204354745 is an apocalyptic number.

It is an amenable number.

204354745 is a deficient number, since it is larger than the sum of its proper divisors (82174223).

204354745 is a wasteful number, since it uses less digits than its factorization.

204354745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721 (or 3714 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 34.

The square root of 204354745 is about 14295.2700219338. The cubic root of 204354745 is about 589.0175596703.

The spelling of 204354745 in words is "two hundred four million, three hundred fifty-four thousand, seven hundred forty-five".