255478808 has 32 divisors (see below), whose sum is σ = 517406400. Its totient is φ = 117562368.

The previous prime is 255478789. The next prime is 255478841. The reversal of 255478808 is 808874552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33233 + ... + 40191.

It is an arithmetic number, because the mean of its divisors is an integer number (16168950).

Almost surely, 2^255478808 is an apocalyptic number.

It is an amenable number.

255478808 is an abundant number, since it is smaller than the sum of its proper divisors (261927592).

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

255478808 is a wasteful number, since it uses less digits than its factorization.

255478808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7331 (or 7327 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 47.

The square root of 255478808 is about 15983.7044517221. The cubic root of 255478808 is about 634.5292213978.

The spelling of 255478808 in words is "two hundred fifty-five million, four hundred seventy-eight thousand, eight hundred eight".