8172422 has 8 divisors (see below), whose sum is σ = 12340272. Its totient is φ = 4059000.

The previous prime is 8172419. The next prime is 8172443. The reversal of 8172422 is 2242718.

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

It is a junction number, because it is equal to n+sod(n) for n = 8172391 and 8172400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13229 + ... + 13832.

It is an arithmetic number, because the mean of its divisors is an integer number (1542534).

Almost surely, 2^8172422 is an apocalyptic number.

8172422 is a deficient number, since it is larger than the sum of its proper divisors (4167850).

8172422 is a wasteful number, since it uses less digits than its factorization.

8172422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27214.

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

The square root of 8172422 is about 2858.7448294662. The cubic root of 8172422 is about 201.4266491633.

The spelling of 8172422 in words is "eight million, one hundred seventy-two thousand, four hundred twenty-two".