2856563478 has 48 divisors (see below), whose sum is σ = 6266666016. Its totient is φ = 940325760.

The previous prime is 2856563477. The next prime is 2856563497. The reversal of 2856563478 is 8743656582.

2856563478 is a `hidden beast` number, since 2 + 8 + 5 + 6 + 563 + 4 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856563473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 734098 + ... + 737978.

It is an arithmetic number, because the mean of its divisors is an integer number (130555542).

Almost surely, 2^2856563478 is an apocalyptic number.

2856563478 is an abundant number, since it is smaller than the sum of its proper divisors (3410102538).

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

2856563478 is a wasteful number, since it uses less digits than its factorization.

2856563478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389 (or 4386 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The square root of 2856563478 is about 53446.8285120829. The cubic root of 2856563478 is about 1418.8874903905.

The spelling of 2856563478 in words is "two billion, eight hundred fifty-six million, five hundred sixty-three thousand, four hundred seventy-eight".