278055882 has 32 divisors (see below), whose sum is σ = 665434560. Its totient is φ = 85555440.

The previous prime is 278055881. The next prime is 278055887. The reversal of 278055882 is 288550872.

It is not an unprimeable number, because it can be changed into a prime (278055881) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 197344 + ... + 198747.

It is an arithmetic number, because the mean of its divisors is an integer number (20794830).

Almost surely, 2^278055882 is an apocalyptic number.

278055882 is an abundant number, since it is smaller than the sum of its proper divisors (387378678).

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

278055882 is a wasteful number, since it uses less digits than its factorization.

278055882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396115 (or 396109 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 278055882 is about 16675.0077061451. The cubic root of 278055882 is about 652.6956158112.

The spelling of 278055882 in words is "two hundred seventy-eight million, fifty-five thousand, eight hundred eighty-two".