278882448 has 120 divisors (see below), whose sum is σ = 806019840. Its totient is φ = 82967040.

The previous prime is 278882377. The next prime is 278882503. The reversal of 278882448 is 844288872.

It is a self number, because there is not a number n which added to its sum of digits gives 278882448.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 250918 + ... + 252026.

It is an arithmetic number, because the mean of its divisors is an integer number (6716832).

Almost surely, 2^278882448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278882448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403009920).

278882448 is an abundant number, since it is smaller than the sum of its proper divisors (527137392).

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

278882448 is a wasteful number, since it uses less digits than its factorization.

278882448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1158 counting only the distinct ones).

The product of its digits is 1835008, while the sum is 51.

The square root of 278882448 is about 16699.7738906849. The cubic root of 278882448 is about 653.3417237110.

It can be divided in two parts, 2788824 and 48, that added together give a palindrome (2788872).

The spelling of 278882448 in words is "two hundred seventy-eight million, eight hundred eighty-two thousand, four hundred forty-eight".