255860984 has 8 divisors (see below), whose sum is σ = 479739360. Its totient is φ = 127930488.

The previous prime is 255860981. The next prime is 255861017. The reversal of 255860984 is 489068552.

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 (255860981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15991304 + ... + 15991319.

It is an arithmetic number, because the mean of its divisors is an integer number (59967420).

Almost surely, 2^255860984 is an apocalyptic number.

It is an amenable number.

255860984 is a deficient number, since it is larger than the sum of its proper divisors (223878376).

255860984 is a wasteful number, since it uses less digits than its factorization.

255860984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31982629 (or 31982625 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The square root of 255860984 is about 15995.6551600739. The cubic root of 255860984 is about 634.8454655263.

The spelling of 255860984 in words is "two hundred fifty-five million, eight hundred sixty thousand, nine hundred eighty-four".