255984 has 20 divisors (see below), whose sum is σ = 661416. Its totient is φ = 85312.

The previous prime is 255977. The next prime is 255989. The reversal of 255984 is 489552.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255984.

It is not an unprimeable number, because it can be changed into a prime (255989) 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, 2619 + ... + 2714.

2²⁵⁵⁹⁸⁴ is an apocalyptic number.

255984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

255984 is an abundant number, since it is smaller than the sum of its proper divisors (405432).

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

255984 is a wasteful number, since it uses less digits than its factorization.

255984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5344 (or 5338 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 255984 is about 505.9486139916. The cubic root of 255984 is about 63.4947192170.

The spelling of 255984 in words is "two hundred fifty-five thousand, nine hundred eighty-four".