2166190 has 32 divisors (see below), whose sum is σ = 4425120. Its totient is φ = 756864.

The previous prime is 2166179. The next prime is 2166221. The reversal of 2166190 is 916612.

It is a super-2 number, since 2×2166190² = 9384758232200, which contains 22 as substring.

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, 2032 + ... + 2908.

It is an arithmetic number, because the mean of its divisors is an integer number (138285).

2^2166190 is an apocalyptic number.

2166190 is an abundant number, since it is smaller than the sum of its proper divisors (2258930).

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

2166190 is a wasteful number, since it uses less digits than its factorization.

2166190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2166190 is about 1471.7982198658. The cubic root of 2166190 is about 129.3894446598.

The spelling of 2166190 in words is "two million, one hundred sixty-six thousand, one hundred ninety".