278742068 has 12 divisors (see below), whose sum is σ = 532144032. Its totient is φ = 126700920.

The previous prime is 278742041. The next prime is 278742073. The reversal of 278742068 is 860247872.

278742068 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 6335047 = 278742068 / (2 + 7 + 8 + 7 + 4 + 2 + 0 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 3167480 + ... + 3167567.

It is an arithmetic number, because the mean of its divisors is an integer number (44345336).

Almost surely, 2^278742068 is an apocalyptic number.

It is an amenable number.

278742068 is a deficient number, since it is larger than the sum of its proper divisors (253401964).

278742068 is a wasteful number, since it uses less digits than its factorization.

278742068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6335062 (or 6335060 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 278742068 is about 16695.5703107142. The cubic root of 278742068 is about 653.2320819306.

The spelling of 278742068 in words is "two hundred seventy-eight million, seven hundred forty-two thousand, sixty-eight".