278474342 has 8 divisors (see below), whose sum is σ = 426599136. Its totient is φ = 136274632.

The previous prime is 278474309. The next prime is 278474347. The reversal of 278474342 is 243474872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 278474342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278474347) 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, 1481153 + ... + 1481340.

It is an arithmetic number, because the mean of its divisors is an integer number (53324892).

Almost surely, 2^278474342 is an apocalyptic number.

278474342 is a deficient number, since it is larger than the sum of its proper divisors (148124794).

278474342 is a wasteful number, since it uses less digits than its factorization.

278474342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962542.

The product of its digits is 301056, while the sum is 41.

The square root of 278474342 is about 16687.5505092869. The cubic root of 278474342 is about 653.0228762954.

The spelling of 278474342 in words is "two hundred seventy-eight million, four hundred seventy-four thousand, three hundred forty-two".