2117216 has 24 divisors (see below), whose sum is σ = 4213440. Its totient is φ = 1047168.

The previous prime is 2117179. The next prime is 2117233. The reversal of 2117216 is 6127112.

It is a congruent number.

It is an unprimeable number.

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, 3185 + ... + 3791.

It is an arithmetic number, because the mean of its divisors is an integer number (175560).

2^2117216 is an apocalyptic number.

It is an amenable number.

2117216 is a deficient number, since it is larger than the sum of its proper divisors (2096224).

2117216 is a wasteful number, since it uses less digits than its factorization.

2117216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726 (or 718 counting only the distinct ones).

The product of its digits is 168, while the sum is 20.

The square root of 2117216 is about 1455.0656342585. The cubic root of 2117216 is about 128.4069082052.

It can be divided in two parts, 2 and 117216, that multiplied together give a palindrome (234432).

The spelling of 2117216 in words is "two million, one hundred seventeen thousand, two hundred sixteen".