2116856 has 32 divisors (see below), whose sum is σ = 4592640. Its totient is φ = 895968.

The previous prime is 2116837. The next prime is 2116867. The reversal of 2116856 is 6586112.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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, 5585 + ... + 5951.

It is an arithmetic number, because the mean of its divisors is an integer number (143520).

2^2116856 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 2116856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2296320).

2116856 is an abundant number, since it is smaller than the sum of its proper divisors (2475784).

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

2116856 is a wasteful number, since it uses less digits than its factorization.

2116856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 479 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2116856 is about 1454.9419232395. The cubic root of 2116856 is about 128.3996299197.

The spelling of 2116856 in words is "two million, one hundred sixteen thousand, eight hundred fifty-six".