2161208 has 16 divisors (see below), whose sum is σ = 4631280. Its totient is φ = 926208.

The previous prime is 2161199. The next prime is 2161213. The reversal of 2161208 is 8021612.

It is a self number, because there is not a number n which added to its sum of digits gives 2161208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19241 + ... + 19352.

It is an arithmetic number, because the mean of its divisors is an integer number (289455).

2^2161208 is an apocalyptic number.

2161208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2161208 is an abundant number, since it is smaller than the sum of its proper divisors (2470072).

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

2161208 is a wasteful number, since it uses less digits than its factorization.

2161208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38606 (or 38602 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2161208 is about 1470.1047581720. The cubic root of 2161208 is about 129.2901746620.

The spelling of 2161208 in words is "two million, one hundred sixty-one thousand, two hundred eight".