2136256 has 28 divisors (see below), whose sum is σ = 4389120. Its totient is φ = 1030400.

The previous prime is 2136247. The next prime is 2136287. The reversal of 2136256 is 6526312.

It is a self number, because there is not a number n which added to its sum of digits gives 2136256.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281 + ... + 2431.

2^2136256 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 2136256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2194560).

2136256 is an abundant number, since it is smaller than the sum of its proper divisors (2252864).

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

2136256 is a wasteful number, since it uses less digits than its factorization.

2136256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 1182 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 2136256 is about 1461.5936507799. The cubic root of 2136256 is about 128.7906786974.

It can be divided in two parts, 213 and 6256, that multiplied together give a triangular number (1332528 = T₁₆₃₂).

The spelling of 2136256 in words is "two million, one hundred thirty-six thousand, two hundred fifty-six".