2878398056 has 8 divisors (see below), whose sum is σ = 5396996370. Its totient is φ = 1439199024.

The previous prime is 2878398031. The next prime is 2878398073. The reversal of 2878398056 is 6508938782.

2878398056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1484869156 + 1393528900 = 38534^2 + 37330^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2878397992 and 2878398010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 179899871 + ... + 179899886.

Almost surely, 2^2878398056 is an apocalyptic number.

It is an amenable number.

2878398056 is a deficient number, since it is larger than the sum of its proper divisors (2518598314).

2878398056 is a wasteful number, since it uses less digits than its factorization.

2878398056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359799763 (or 359799759 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 56.

The square root of 2878398056 is about 53650.7041519494. The cubic root of 2878398056 is about 1422.4934791724.

The spelling of 2878398056 in words is "two billion, eight hundred seventy-eight million, three hundred ninety-eight thousand, fifty-six".