7217422 has 8 divisors (see below), whose sum is σ = 10856736. Its totient is φ = 3598512.

The previous prime is 7217417. The next prime is 7217429. The reversal of 7217422 is 2247127.

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 (7217429) 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, 4183 + ... + 5650.

It is an arithmetic number, because the mean of its divisors is an integer number (1357092).

Almost surely, 2^7217422 is an apocalyptic number.

7217422 is a deficient number, since it is larger than the sum of its proper divisors (3639314).

7217422 is a wasteful number, since it uses less digits than its factorization.

7217422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202.

The product of its digits is 1568, while the sum is 25.

The square root of 7217422 is about 2686.5260095521. The cubic root of 7217422 is about 193.2534992089.

The spelling of 7217422 in words is "seven million, two hundred seventeen thousand, four hundred twenty-two".