2217442 has 8 divisors (see below), whose sum is σ = 3340800.
Its totient is φ = 1103844.
The previous prime is 2217421. The next prime is 2217443. The reversal of 2217442 is 2447122.
It is a happy number.
2217442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a d-powerful number, because it can be written as 29 + 211 + 1 + 76 + 42 + 43 + 221 .
It is not an unprimeable number, because it can be changed into a prime (2217443) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1842 + ... + 2797.
It is an arithmetic number, because the mean of its divisors is an integer number (417600).
22217442 is an apocalyptic number.
2217442 is a deficient number, since it is larger than the sum of its proper divisors (1123358).
2217442 is a wasteful number, since it uses less digits than its factorization.
2217442 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4880.
The product of its digits is 896, while the sum is 22.
The square root of 2217442 is about 1489.1077865621.
The cubic root of 2217442 is about 130.4019511796.
The spelling of 2217442 in words is "two million, two hundred seventeen thousand, four hundred forty-two".