255804128 has 24 divisors (see below), whose sum is σ = 520982280. Its totient is φ = 123491200.

The previous prime is 255804121. The next prime is 255804139. The reversal of 255804128 is 821408552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255804121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136898 + ... + 138753.

It is an arithmetic number, because the mean of its divisors is an integer number (21707595).

Almost surely, 2^255804128 is an apocalyptic number.

It is an amenable number.

255804128 is an abundant number, since it is smaller than the sum of its proper divisors (265178152).

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

255804128 is a wasteful number, since it uses less digits than its factorization.

255804128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275690 (or 275682 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 255804128 is about 15993.8778287193. The cubic root of 255804128 is about 634.7984381039.

The spelling of 255804128 in words is "two hundred fifty-five million, eight hundred four thousand, one hundred twenty-eight".