2871356256 has 72 divisors (see below), whose sum is σ = 8379385560. Its totient is φ = 956593728.

The previous prime is 2871356233. The next prime is 2871356269. The reversal of 2871356256 is 6526531782.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

2871356256 is a `hidden beast` number, since 2 + 8 + 7 + 13 + 5 + 625 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1574161 + ... + 1575983.

It is an arithmetic number, because the mean of its divisors is an integer number (116380355).

Almost surely, 2^2871356256 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 2871356256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4189692780).

2871356256 is an abundant number, since it is smaller than the sum of its proper divisors (5508029304).

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

2871356256 is an frugal number, since it uses more digits than its factorization.

2871356256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665 (or 1828 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 2871356256 is about 53585.0376131248. The cubic root of 2871356256 is about 1421.3325215763.

The spelling of 2871356256 in words is "two billion, eight hundred seventy-one million, three hundred fifty-six thousand, two hundred fifty-six".