8442522 has 64 divisors (see below), whose sum is σ = 20891520. Its totient is φ = 2505600.

The previous prime is 8442521. The next prime is 8442559. The reversal of 8442522 is 2252448.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (8442521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36118 + ... + 36350.

It is an arithmetic number, because the mean of its divisors is an integer number (326430).

Almost surely, 2^8442522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8442522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10445760).

8442522 is an abundant number, since it is smaller than the sum of its proper divisors (12448998).

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

8442522 is a wasteful number, since it uses less digits than its factorization.

8442522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 310 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 8442522 is about 2905.6018309466. The cubic root of 8442522 is about 203.6217037679.

The spelling of 8442522 in words is "eight million, four hundred forty-two thousand, five hundred twenty-two".