204534147 has 18 divisors (see below), whose sum is σ = 285881092. Its totient is φ = 130064264.

The previous prime is 204534137. The next prime is 204534151. The reversal of 204534147 is 741435402.

It is not a de Polignac number, because 204534147 - 2⁴ = 204534131 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (204534137) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 569554 + ... + 569912.

Almost surely, 2^204534147 is an apocalyptic number.

204534147 is a deficient number, since it is larger than the sum of its proper divisors (81346945).

204534147 is an frugal number, since it uses more digits than its factorization.

204534147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 204534147 is about 14301.5435180962. The cubic root of 204534147 is about 589.1898744371.

Adding to 204534147 its reverse (741435402), we get a palindrome (945969549).

The spelling of 204534147 in words is "two hundred four million, five hundred thirty-four thousand, one hundred forty-seven".