2116206 has 20 divisors (see below), whose sum is σ = 4742232. Its totient is φ = 705348.

The previous prime is 2116199. The next prime is 2116291. The reversal of 2116206 is 6026112.

It is a happy number.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6370 + ... + 6693.

2^2116206 is an apocalyptic number.

2116206 is an abundant number, since it is smaller than the sum of its proper divisors (2626026).

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

2116206 is a wasteful number, since it uses less digits than its factorization.

2116206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13077 (or 13068 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2116206 is about 1454.7185294757. The cubic root of 2116206 is about 128.3864864807.

The spelling of 2116206 in words is "two million, one hundred sixteen thousand, two hundred six".