2856291136 has 56 divisors (see below), whose sum is σ = 5758200320. Its totient is φ = 1405527552.

The previous prime is 2856291103. The next prime is 2856291167. The reversal of 2856291136 is 6311926582.

It is a junction number, because it is equal to n+sod(n) for n = 2856291092 and 2856291101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2006521 + ... + 2007943.

Almost surely, 2^2856291136 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 2856291136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2879100160).

2856291136 is an abundant number, since it is smaller than the sum of its proper divisors (2901909184).

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

2856291136 is a wasteful number, since it uses less digits than its factorization.

2856291136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1901 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 2856291136 is about 53444.2806668777. The cubic root of 2856291136 is about 1418.8423971703.

The spelling of 2856291136 in words is "two billion, eight hundred fifty-six million, two hundred ninety-one thousand, one hundred thirty-six".