2217842 has 8 divisors (see below), whose sum is σ = 3629232. Its totient is φ = 1008100.

The previous prime is 2217829. The next prime is 2217857. The reversal of 2217842 is 2487122.

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

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, 50384 + ... + 50427.

It is an arithmetic number, because the mean of its divisors is an integer number (453654).

2^2217842 is an apocalyptic number.

2217842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2217842 is a deficient number, since it is larger than the sum of its proper divisors (1411390).

2217842 is a wasteful number, since it uses less digits than its factorization.

2217842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100824.

The product of its digits is 1792, while the sum is 26.

The square root of 2217842 is about 1489.2420891178. The cubic root of 2217842 is about 130.4097916920.

The spelling of 2217842 in words is "two million, two hundred seventeen thousand, eight hundred forty-two".