278087049 has 12 divisors (see below), whose sum is σ = 407339712. Its totient is φ = 182779800.

The previous prime is 278087027. The next prime is 278087057. The reversal of 278087049 is 940780872.

It is not a de Polignac number, because 278087049 - 2¹⁵ = 278054281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 278086995 and 278087013.

It is not an unprimeable number, because it can be changed into a prime (278087009) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 216957 + ... + 218234.

It is an arithmetic number, because the mean of its divisors is an integer number (33944976).

Almost surely, 2^278087049 is an apocalyptic number.

It is an amenable number.

278087049 is a deficient number, since it is larger than the sum of its proper divisors (129252663).

278087049 is a wasteful number, since it uses less digits than its factorization.

278087049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435268 (or 435265 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 278087049 is about 16675.9422222554. The cubic root of 278087049 is about 652.7200015619.

The spelling of 278087049 in words is "two hundred seventy-eight million, eighty-seven thousand, forty-nine".