278341228 has 12 divisors (see below), whose sum is σ = 531378792. Its totient is φ = 126518720.

The previous prime is 278341223. The next prime is 278341237. The reversal of 278341228 is 822143872.

It is not an unprimeable number, because it can be changed into a prime (278341223) 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 3 ways as a sum of consecutive naturals, for example, 3162925 + ... + 3163012.

It is an arithmetic number, because the mean of its divisors is an integer number (44281566).

Almost surely, 2^278341228 is an apocalyptic number.

It is an amenable number.

278341228 is a deficient number, since it is larger than the sum of its proper divisors (253037564).

278341228 is a wasteful number, since it uses less digits than its factorization.

278341228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325952 (or 6325950 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 278341228 is about 16683.5616101599. The cubic root of 278341228 is about 652.9188088485.

The spelling of 278341228 in words is "two hundred seventy-eight million, three hundred forty-one thousand, two hundred twenty-eight".