2236656 has 40 divisors (see below), whose sum is σ = 6120144. Its totient is φ = 701440.

The previous prime is 2236651. The next prime is 2236657. The reversal of 2236656 is 6566322.

It is a d-powerful number, because it can be written as 2 + 2¹¹ + 3⁵ + 6 + 6⁴ + 5⁹ + 6⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2236651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555 + ... + 2186.

2^2236656 is an apocalyptic number.

It is an amenable number.

2236656 is an abundant number, since it is smaller than the sum of its proper divisors (3883488).

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

2236656 is a wasteful number, since it uses less digits than its factorization.

2236656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769 (or 2763 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 2236656 is about 1495.5453854698. The cubic root of 2236656 is about 130.7775101847. Note that the first 3 decimals are identical.

It can be divided in two parts, 22366 and 56, that added together give a palindrome (22422).

The spelling of 2236656 in words is "two million, two hundred thirty-six thousand, six hundred fifty-six".