8217422 has 8 divisors (see below), whose sum is σ = 12482400. Its totient is φ = 4056624.

The previous prime is 8217383. The next prime is 8217427. The reversal of 8217422 is 2247128.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8217391 and 8217400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8217427) 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, 25847 + ... + 26162.

It is an arithmetic number, because the mean of its divisors is an integer number (1560300).

Almost surely, 2^8217422 is an apocalyptic number.

8217422 is a deficient number, since it is larger than the sum of its proper divisors (4264978).

8217422 is a wasteful number, since it uses less digits than its factorization.

8217422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52090.

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

The square root of 8217422 is about 2866.6046117314. The cubic root of 8217422 is about 201.7956794261.

The spelling of 8217422 in words is "eight million, two hundred seventeen thousand, four hundred twenty-two".