2856756 has 48 divisors (see below), whose sum is σ = 7741440. Its totient is φ = 803040.

The previous prime is 2856683. The next prime is 2856773. The reversal of 2856756 is 6576582.

It is a happy number.

It is a super-2 number, since 2×2856756² = 16322109687072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5725 + ... + 6203.

It is an arithmetic number, because the mean of its divisors is an integer number (161280).

2^2856756 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 2856756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3870720).

2856756 is an abundant number, since it is smaller than the sum of its proper divisors (4884684).

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

2856756 is a wasteful number, since it uses less digits than its factorization.

2856756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 562 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 2856756 is about 1690.1940716971. The cubic root of 2856756 is about 141.8919365628.

The spelling of 2856756 in words is "two million, eight hundred fifty-six thousand, seven hundred fifty-six".