2856568 has 48 divisors (see below), whose sum is σ = 6368040. Its totient is φ = 1193280.

The previous prime is 2856559. The next prime is 2856599. The reversal of 2856568 is 8656582.

It is a self number, because there is not a number n which added to its sum of digits gives 2856568.

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, 12471 + ... + 12697.

2^2856568 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 2856568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3184020).

2856568 is an abundant number, since it is smaller than the sum of its proper divisors (3511472).

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

2856568 is a wasteful number, since it uses less digits than its factorization.

2856568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 253 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 2856568 is about 1690.1384558669. The cubic root of 2856568 is about 141.8888239100. Note that the first 4 decimals are identical.

The spelling of 2856568 in words is "two million, eight hundred fifty-six thousand, five hundred sixty-eight".