2856399812 has 12 divisors (see below), whose sum is σ = 5712799680. Its totient is φ = 1224171336.

The previous prime is 2856399809. The next prime is 2856399851. The reversal of 2856399812 is 2189936582.

2856399812 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51007112 + ... + 51007167.

It is an arithmetic number, because the mean of its divisors is an integer number (476066640).

Almost surely, 2^2856399812 is an apocalyptic number.

It is an amenable number.

2856399812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2856399812 is a wasteful number, since it uses less digits than its factorization.

2856399812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102014290 (or 102014288 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The square root of 2856399812 is about 53445.2973796573. The cubic root of 2856399812 is about 1418.8603916199.

The spelling of 2856399812 in words is "two billion, eight hundred fifty-six million, three hundred ninety-nine thousand, eight hundred twelve".