2856002778 has 12 divisors (see below), whose sum is σ = 6188006058. Its totient is φ = 952000920.

The previous prime is 2856002777. The next prime is 2856002783. The reversal of 2856002778 is 8772006582.

2856002778 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., 1835008569 + 1020994209 = 42837^2 + 31953^2 .

It is not an unprimeable number, because it can be changed into a prime (2856002777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79333393 + ... + 79333428.

Almost surely, 2^2856002778 is an apocalyptic number.

2856002778 is an abundant number, since it is smaller than the sum of its proper divisors (3332003280).

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

2856002778 is a wasteful number, since it uses less digits than its factorization.

2856002778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158666829 (or 158666826 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 2856002778 is about 53441.5828545525. The cubic root of 2856002778 is about 1418.7946489652.

The spelling of 2856002778 in words is "two billion, eight hundred fifty-six million, two thousand, seven hundred seventy-eight".