11711856 has 60 divisors (see below), whose sum is σ = 32822552. Its totient is φ = 3577344.

The previous prime is 11711851. The next prime is 11711879. The reversal of 11711856 is 65811711.

11711856 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11711851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85420 + ... + 85556.

Almost surely, 2^11711856 is an apocalyptic number.

11711856 is a gapful number since it is divisible by the number (16) 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 11711856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16411276).

11711856 is an abundant number, since it is smaller than the sum of its proper divisors (21110696).

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

11711856 is a wasteful number, since it uses less digits than its factorization.

11711856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 155 counting only the distinct ones).

The product of its digits is 1680, while the sum is 30.

The square root of 11711856 is about 3422.2589031223. The cubic root of 11711856 is about 227.0955241068.

The spelling of 11711856 in words is "eleven million, seven hundred eleven thousand, eight hundred fifty-six".