2119806 has 24 divisors (see below), whose sum is σ = 4946760. Its totient is φ = 652176.

The previous prime is 2119783. The next prime is 2119829. The reversal of 2119806 is 6089112.

It is an interprime number because it is at equal distance from previous prime (2119783) and next prime (2119829).

It is a self number, because there is not a number n which added to its sum of digits gives 2119806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4296 + ... + 4763.

It is an arithmetic number, because the mean of its divisors is an integer number (206115).

2^2119806 is an apocalyptic number.

2119806 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2119806 is an abundant number, since it is smaller than the sum of its proper divisors (2826954).

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

2119806 is a wasteful number, since it uses less digits than its factorization.

2119806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9080 (or 9077 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2119806 is about 1455.9553564584. The cubic root of 2119806 is about 128.4592471212.

The spelling of 2119806 in words is "two million, one hundred nineteen thousand, eight hundred six".