278887947040 has 48 divisors (see below), whose sum is σ = 681592537080. Its totient is φ = 107708446720.

The previous prime is 278887947017. The next prime is 278887947067. The reversal of 278887947040 is 40749788872.

It can be written as a sum of positive squares in 4 ways, for example, as 260340775696 + 18547171344 = 510236^2 + 136188^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30047941 + ... + 30057220.

Almost surely, 2^278887947040 is an apocalyptic number.

278887947040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278887947040 is an abundant number, since it is smaller than the sum of its proper divisors (402704590040).

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

278887947040 is a wasteful number, since it uses less digits than its factorization.

278887947040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60105205 (or 60105197 counting only the distinct ones).

The product of its (nonzero) digits is 50577408, while the sum is 64.

The spelling of 278887947040 in words is "two hundred seventy-eight billion, eight hundred eighty-seven million, nine hundred forty-seven thousand, forty".