12087856 has 40 divisors (see below), whose sum is σ = 25761744. Its totient is φ = 5448960.

The previous prime is 12087847. The next prime is 12087877. The reversal of 12087856 is 65878021.

It is a super-2 number, since 2×12087856² = 292232525353472, which contains 22 as substring.

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, 30250 + ... + 30646.

Almost surely, 2^12087856 is an apocalyptic number.

12087856 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 12087856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12880872).

12087856 is an abundant number, since it is smaller than the sum of its proper divisors (13673888).

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

12087856 is a wasteful number, since it uses less digits than its factorization.

12087856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 12087856 is about 3476.7594107157. The cubic root of 12087856 is about 229.5002128018.

The spelling of 12087856 in words is "twelve million, eighty-seven thousand, eight hundred fifty-six".