2166412 has 12 divisors (see below), whose sum is σ = 4014360. Its totient is φ = 1019456.

The previous prime is 2166407. The next prime is 2166419. The reversal of 2166412 is 2146612.

It is not an unprimeable number, because it can be changed into a prime (2166419) 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, 15862 + ... + 15997.

It is an arithmetic number, because the mean of its divisors is an integer number (334530).

2^2166412 is an apocalyptic number.

It is an amenable number.

2166412 is a deficient number, since it is larger than the sum of its proper divisors (1847948).

2166412 is a wasteful number, since it uses less digits than its factorization.

2166412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31880 (or 31878 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 2166412 is about 1471.8736358805. The cubic root of 2166412 is about 129.3938646284.

The spelling of 2166412 in words is "two million, one hundred sixty-six thousand, four hundred twelve".