2216918 has 8 divisors (see below), whose sum is σ = 3627720. Its totient is φ = 1007680.

The previous prime is 2216917. The next prime is 2216941. The reversal of 2216918 is 8196122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50363 + ... + 50406.

It is an arithmetic number, because the mean of its divisors is an integer number (453465).

2^2216918 is an apocalyptic number.

2216918 is a deficient number, since it is larger than the sum of its proper divisors (1410802).

2216918 is a wasteful number, since it uses less digits than its factorization.

2216918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100782.

The product of its digits is 1728, while the sum is 29.

The square root of 2216918 is about 1488.9318318849. The cubic root of 2216918 is about 130.3916786816.

The spelling of 2216918 in words is "two million, two hundred sixteen thousand, nine hundred eighteen".