2256366 has 32 divisors (see below), whose sum is σ = 5326848. Its totient is φ = 623520.

The previous prime is 2256361. The next prime is 2256367. The reversal of 2256366 is 6636522.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2³ + 2¹⁵ + 5⁹ + 6 + 3¹¹ + 6⁶ + 6⁶ .

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436 + ... + 2168.

It is an arithmetic number, because the mean of its divisors is an integer number (166464).

2^2256366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2256366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2663424).

2256366 is an abundant number, since it is smaller than the sum of its proper divisors (3070482).

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

2256366 is a wasteful number, since it uses less digits than its factorization.

2256366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776.

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

The square root of 2256366 is about 1502.1205011583. The cubic root of 2256366 is about 131.1605358577.

The spelling of 2256366 in words is "two million, two hundred fifty-six thousand, three hundred sixty-six".