205203128 has 32 divisors (see below), whose sum is σ = 423178560. Its totient is φ = 92691840.

The previous prime is 205203127. The next prime is 205203137. The reversal of 205203128 is 821302502.

205203128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205203127) 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, 16103 + ... + 25878.

It is an arithmetic number, because the mean of its divisors is an integer number (13224330).

Almost surely, 2^205203128 is an apocalyptic number.

It is an amenable number.

205203128 is an abundant number, since it is smaller than the sum of its proper divisors (217975432).

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

205203128 is a wasteful number, since it uses less digits than its factorization.

205203128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42047 (or 42043 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 205203128 is about 14324.9128444120. The cubic root of 205203128 is about 589.8315405292.

The spelling of 205203128 in words is "two hundred five million, two hundred three thousand, one hundred twenty-eight".