2166926 has 4 divisors (see below), whose sum is σ = 3250392. Its totient is φ = 1083462.

The previous prime is 2166919. The next prime is 2166937. The reversal of 2166926 is 6296612.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2166892 and 2166901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541730 + ... + 541733.

It is an arithmetic number, because the mean of its divisors is an integer number (812598).

2^2166926 is an apocalyptic number.

2166926 is a deficient number, since it is larger than the sum of its proper divisors (1083466).

2166926 is a wasteful number, since it uses less digits than its factorization.

2166926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083465.

The product of its digits is 7776, while the sum is 32.

The square root of 2166926 is about 1472.0482329054. The cubic root of 2166926 is about 129.4040970907.

The spelling of 2166926 in words is "two million, one hundred sixty-six thousand, nine hundred twenty-six".