278482842 has 24 divisors (see below), whose sum is σ = 658232640. Its totient is φ = 84388680.

The previous prime is 278482823. The next prime is 278482843. The reversal of 278482842 is 248284872.

It is not an unprimeable number, because it can be changed into a prime (278482843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 703042 + ... + 703437.

It is an arithmetic number, because the mean of its divisors is an integer number (27426360).

Almost surely, 2^278482842 is an apocalyptic number.

278482842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

278482842 is an abundant number, since it is smaller than the sum of its proper divisors (379749798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

278482842 is a wasteful number, since it uses less digits than its factorization.

278482842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406498 (or 1406495 counting only the distinct ones).

The product of its digits is 458752, while the sum is 45.

The square root of 278482842 is about 16687.8051882205. The cubic root of 278482842 is about 653.0295204001.

The spelling of 278482842 in words is "two hundred seventy-eight million, four hundred eighty-two thousand, eight hundred forty-two".