2165982 has 32 divisors (see below), whose sum is σ = 5332992. Its totient is φ = 571104.

The previous prime is 2165971. The next prime is 2166007. The reversal of 2165982 is 2895612.

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438 + ... + 2529.

It is an arithmetic number, because the mean of its divisors is an integer number (166656).

2^2165982 is an apocalyptic number.

2165982 is an abundant number, since it is smaller than the sum of its proper divisors (3167010).

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

2165982 is a wasteful number, since it uses less digits than its factorization.

2165982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992.

The product of its digits is 8640, while the sum is 33.

The square root of 2165982 is about 1471.7275563093. The cubic root of 2165982 is about 129.3853031539.

The spelling of 2165982 in words is "two million, one hundred sixty-five thousand, nine hundred eighty-two".