2166392 has 8 divisors (see below), whose sum is σ = 4062000. Its totient is φ = 1083192.

The previous prime is 2166319. The next prime is 2166403. The reversal of 2166392 is 2936612.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135392 + ... + 135407.

It is an arithmetic number, because the mean of its divisors is an integer number (507750).

2^2166392 is an apocalyptic number.

It is an amenable number.

2166392 is a deficient number, since it is larger than the sum of its proper divisors (1895608).

2166392 is a wasteful number, since it uses less digits than its factorization.

2166392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270805 (or 270801 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 2166392 is about 1471.8668418033. The cubic root of 2166392 is about 129.3934664454.

The spelling of 2166392 in words is "two million, one hundred sixty-six thousand, three hundred ninety-two".