255128 has 8 divisors (see below), whose sum is σ = 478380. Its totient is φ = 127560.

The previous prime is 255127. The next prime is 255133. The reversal of 255128 is 821552.

255128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15938 + ... + 15953.

2²⁵⁵¹²⁸ is an apocalyptic number.

It is an amenable number.

255128 is a deficient number, since it is larger than the sum of its proper divisors (223252).

255128 is a wasteful number, since it uses less digits than its factorization.

255128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31897 (or 31893 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 255128 is about 505.1019699031. The cubic root of 255128 is about 63.4238656018.

It can be divided in two parts, 255 and 128, that multiplied together give a triangular number (32640 = T₂₅₅).

The spelling of 255128 in words is "two hundred fifty-five thousand, one hundred twenty-eight".