204360128 has 56 divisors (see below), whose sum is σ = 490740192. Its totient is φ = 82427904.

The previous prime is 204360119. The next prime is 204360157. The reversal of 204360128 is 821063402.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 204360097 and 204360106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5801 + ... + 21032.

Almost surely, 2^204360128 is an apocalyptic number.

204360128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

204360128 is an abundant number, since it is smaller than the sum of its proper divisors (286380064).

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

204360128 is a wasteful number, since it uses less digits than its factorization.

204360128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26869 (or 26859 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 204360128 is about 14295.4582997538. The cubic root of 204360128 is about 589.0227314835.

The spelling of 204360128 in words is "two hundred four million, three hundred sixty thousand, one hundred twenty-eight".