2166026 has 8 divisors (see below), whose sum is σ = 3257760. Its totient is φ = 1080108.

The previous prime is 2166023. The next prime is 2166029. The reversal of 2166026 is 6206612.

It is an interprime number because it is at equal distance from previous prime (2166023) and next prime (2166029).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2165992 and 2166010.

It is not an unprimeable number, because it can be changed into a prime (2166023) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 356 + ... + 2111.

It is an arithmetic number, because the mean of its divisors is an integer number (407220).

2^2166026 is an apocalyptic number.

2166026 is a deficient number, since it is larger than the sum of its proper divisors (1091734).

2166026 is a wasteful number, since it uses less digits than its factorization.

2166026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2166026 is about 1471.7425046522. The cubic root of 2166026 is about 129.3861792638.

The spelling of 2166026 in words is "two million, one hundred sixty-six thousand, twenty-six".