2856656 has 20 divisors (see below), whose sum is σ = 6038304. Its totient is φ = 1298400.

The previous prime is 2856653. The next prime is 2856673. The reversal of 2856656 is 6566582.

It is a happy number.

2856656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2¹⁶ + 8⁷ + 5⁶ + 6 + 6⁵ + 5⁸ + 6⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7940 + ... + 8291.

2^2856656 is an apocalyptic number.

It is an amenable number.

2856656 is an abundant number, since it is smaller than the sum of its proper divisors (3181648).

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

2856656 is a wasteful number, since it uses less digits than its factorization.

2856656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16250 (or 16244 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 2856656 is about 1690.1644890365. The cubic root of 2856656 is about 141.8902809134.

It can be divided in two parts, 2 and 856656, that added together give a palindrome (856658).

The spelling of 2856656 in words is "two million, eight hundred fifty-six thousand, six hundred fifty-six".