2812656 has 80 divisors (see below), whose sum is σ = 9070848. Its totient is φ = 729600.

The previous prime is 2812651. The next prime is 2812679. The reversal of 2812656 is 6562182.

It is a super-2 number, since 2×2812656² = 15822067548672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2812651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3316 + ... + 4076.

2^2812656 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 2812656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4535424).

2812656 is an abundant number, since it is smaller than the sum of its proper divisors (6258192).

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

2812656 is a wasteful number, since it uses less digits than its factorization.

2812656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 784 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 2812656 is about 1677.0974926939. The cubic root of 2812656 is about 141.1580140905.

It can be divided in two parts, 28126 and 56, that added together give a palindrome (28182).

The spelling of 2812656 in words is "two million, eight hundred twelve thousand, six hundred fifty-six".