278880286152 has 96 divisors (see below), whose sum is σ = 762432929280. Its totient is φ = 84959596800.

The previous prime is 278880286141. The next prime is 278880286183. The reversal of 278880286152 is 251682088872.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 278880286092 and 278880286101.

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, 69273 + ... + 750039.

It is an arithmetic number, because the mean of its divisors is an integer number (7942009680).

Almost surely, 2^278880286152 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 278880286152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381216464640).

278880286152 is an abundant number, since it is smaller than the sum of its proper divisors (483552643128).

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

278880286152 is a wasteful number, since it uses less digits than its factorization.

278880286152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680903 (or 680886 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 57.

The spelling of 278880286152 in words is "two hundred seventy-eight billion, eight hundred eighty million, two hundred eighty-six thousand, one hundred fifty-two".