8257422 has 8 divisors (see below), whose sum is σ = 16514856. Its totient is φ = 2752472.

The previous prime is 8257409. The next prime is 8257423. The reversal of 8257422 is 2247528.

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

8257422 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 8257422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8257423) 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, 688113 + ... + 688124.

It is an arithmetic number, because the mean of its divisors is an integer number (2064357).

Almost surely, 2^8257422 is an apocalyptic number.

8257422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8257422 is a wasteful number, since it uses less digits than its factorization.

8257422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376242.

The product of its digits is 8960, while the sum is 30.

The square root of 8257422 is about 2873.5730371786. The cubic root of 8257422 is about 202.1225769772.

The spelling of 8257422 in words is "eight million, two hundred fifty-seven thousand, four hundred twenty-two".