2011256 has 32 divisors (see below), whose sum is σ = 4127760. Its totient is φ = 913152.

The previous prime is 2011241. The next prime is 2011259. The reversal of 2011256 is 6521102.

2011256 is nontrivially palindromic in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011259) 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 7 ways as a sum of consecutive naturals, for example, 8516 + ... + 8748.

2^2011256 is an apocalyptic number.

2011256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2063880).

2011256 is an abundant number, since it is smaller than the sum of its proper divisors (2116504).

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

2011256 is a wasteful number, since it uses less digits than its factorization.

2011256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2011256 is about 1418.1875757459. The cubic root of 2011256 is about 126.2280241461.

Adding to 2011256 its reverse (6521102), we get a palindrome (8532358).

The spelling of 2011256 in words is "two million, eleven thousand, two hundred fifty-six".