255789984 has 24 divisors (see below), whose sum is σ = 671448960. Its totient is φ = 85263296.

The previous prime is 255789907. The next prime is 255790001. The reversal of 255789984 is 489987552.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332144 + ... + 1332335.

It is an arithmetic number, because the mean of its divisors is an integer number (27977040).

Almost surely, 2^255789984 is an apocalyptic number.

255789984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

255789984 is an abundant number, since it is smaller than the sum of its proper divisors (415658976).

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

255789984 is a wasteful number, since it uses less digits than its factorization.

255789984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664492 (or 2664484 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 57.

The square root of 255789984 is about 15993.4356534173. The cubic root of 255789984 is about 634.7867380652.

The spelling of 255789984 in words is "two hundred fifty-five million, seven hundred eighty-nine thousand, nine hundred eighty-four".