278882338 has 16 divisors (see below), whose sum is σ = 484634880. Its totient is φ = 117883296.

The previous prime is 278882333. The next prime is 278882371. The reversal of 278882338 is 833288872.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 278882291 and 278882300.

It is not an unprimeable number, because it can be changed into a prime (278882333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135418 + ... + 137461.

It is an arithmetic number, because the mean of its divisors is an integer number (30289680).

Almost surely, 2^278882338 is an apocalyptic number.

278882338 is a deficient number, since it is larger than the sum of its proper divisors (205752542).

278882338 is a wasteful number, since it uses less digits than its factorization.

278882338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272961.

The product of its digits is 1032192, while the sum is 49.

The square root of 278882338 is about 16699.7705972268. The cubic root of 278882338 is about 653.3416378115.

The spelling of 278882338 in words is "two hundred seventy-eight million, eight hundred eighty-two thousand, three hundred thirty-eight".