2111916 has 12 divisors (see below), whose sum is σ = 4927832. Its totient is φ = 703968.

The previous prime is 2111909. The next prime is 2111917. The reversal of 2111916 is 6191112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2111892 and 2111901.

It is not an unprimeable number, because it can be changed into a prime (2111917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87985 + ... + 88008.

2^2111916 is an apocalyptic number.

It is an amenable number.

2111916 is an abundant number, since it is smaller than the sum of its proper divisors (2815916).

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

2111916 is a wasteful number, since it uses less digits than its factorization.

2111916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176000 (or 175998 counting only the distinct ones).

The product of its digits is 108, while the sum is 21.

The square root of 2111916 is about 1453.2432693806. The cubic root of 2111916 is about 128.2996722121.

The spelling of 2111916 in words is "two million, one hundred eleven thousand, nine hundred sixteen".