11387856 has 40 divisors (see below), whose sum is σ = 29866144. Its totient is φ = 3738240.

The previous prime is 11387837. The next prime is 11387861. The reversal of 11387856 is 65878311.

11387856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1446 + ... + 4986.

Almost surely, 2^11387856 is an apocalyptic number.

11387856 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 11387856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14933072).

11387856 is an abundant number, since it is smaller than the sum of its proper divisors (18478288).

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

11387856 is a wasteful number, since it uses less digits than its factorization.

11387856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619 (or 3613 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 11387856 is about 3374.5897528440. The cubic root of 11387856 is about 224.9817664237.

The spelling of 11387856 in words is "eleven million, three hundred eighty-seven thousand, eight hundred fifty-six".