204528140 has 12 divisors (see below), whose sum is σ = 429509136. Its totient is φ = 81811248.

The previous prime is 204528133. The next prime is 204528143. The reversal of 204528140 is 41825402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (204528143) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5113184 + ... + 5113223.

It is an arithmetic number, because the mean of its divisors is an integer number (35792428).

Almost surely, 2^204528140 is an apocalyptic number.

204528140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204528140 is an abundant number, since it is smaller than the sum of its proper divisors (224980996).

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

204528140 is a wasteful number, since it uses less digits than its factorization.

204528140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10226416 (or 10226414 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 204528140 is about 14301.3335042576. Note that the first 3 decimals coincide. The cubic root of 204528140 is about 589.1841063729.

The spelling of 204528140 in words is "two hundred four million, five hundred twenty-eight thousand, one hundred forty".