204547128 has 32 divisors (see below), whose sum is σ = 541449360. Its totient is φ = 64171520.

The previous prime is 204547127. The next prime is 204547129. The reversal of 204547128 is 821745402.

It is an interprime number because it is at equal distance from previous prime (204547127) and next prime (204547129).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204547127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250263 + ... + 251078.

Almost surely, 2^204547128 is an apocalyptic number.

It is an amenable number.

204547128 is an abundant number, since it is smaller than the sum of its proper divisors (336902232).

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

204547128 is a wasteful number, since it uses less digits than its factorization.

204547128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501367 (or 501363 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 204547128 is about 14301.9973430287. The cubic root of 204547128 is about 589.2023387160.

The spelling of 204547128 in words is "two hundred four million, five hundred forty-seven thousand, one hundred twenty-eight".