12406856 has 48 divisors (see below), whose sum is σ = 29238720. Its totient is φ = 4831200.

The previous prime is 12406847. The next prime is 12406883. The reversal of 12406856 is 65860421.

12406856 = T₃₉₁ + T₃₉₂ + ... + T₅₁₁.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5861 + ... + 7691.

It is an arithmetic number, because the mean of its divisors is an integer number (609140).

Almost surely, 2^12406856 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 12406856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14619360).

12406856 is an abundant number, since it is smaller than the sum of its proper divisors (16831864).

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

12406856 is a wasteful number, since it uses less digits than its factorization.

12406856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866 (or 1851 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 12406856 is about 3522.3367243919. The cubic root of 12406856 is about 231.5015557182.

The spelling of 12406856 in words is "twelve million, four hundred six thousand, eight hundred fifty-six".