8157422 has 48 divisors (see below), whose sum is σ = 16183440. Its totient is φ = 3048192.

The previous prime is 8157421. The next prime is 8157431. The reversal of 8157422 is 2247518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24038 + ... + 24374.

It is an arithmetic number, because the mean of its divisors is an integer number (337155).

Almost surely, 2^8157422 is an apocalyptic number.

8157422 is a deficient number, since it is larger than the sum of its proper divisors (8026018).

8157422 is a wasteful number, since it uses less digits than its factorization.

8157422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 378 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 8157422 is about 2856.1200955142. The cubic root of 8157422 is about 201.3033380993.

The spelling of 8157422 in words is "eight million, one hundred fifty-seven thousand, four hundred twenty-two".