278428871304 has 48 divisors (see below), whose sum is σ = 754565311500. Its totient is φ = 92749670784.

The previous prime is 278428871291. The next prime is 278428871381. The reversal of 278428871304 is 403178824872.

278428871304 is a `hidden beast` number, since 2 + 7 + 8 + 428 + 87 + 130 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 232333640100 + 46095231204 = 482010^2 + 214698^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1136719 + ... + 1359774.

Almost surely, 2^278428871304 is an apocalyptic number.

278428871304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

278428871304 is an abundant number, since it is smaller than the sum of its proper divisors (476136440196).

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

278428871304 is a wasteful number, since it uses less digits than its factorization.

278428871304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498054 (or 2498047 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 54.

The spelling of 278428871304 in words is "two hundred seventy-eight billion, four hundred twenty-eight million, eight hundred seventy-one thousand, three hundred four".