9220638 has 48 divisors (see below), whose sum is σ = 21790080. Its totient is φ = 2547360.

The previous prime is 9220633. The next prime is 9220639. The reversal of 9220638 is 8360229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9220633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151128 + ... + 151188.

It is an arithmetic number, because the mean of its divisors is an integer number (453960).

Almost surely, 2^9220638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9220638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10895040).

9220638 is an abundant number, since it is smaller than the sum of its proper divisors (12569442).

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

9220638 is a wasteful number, since it uses less digits than its factorization.

9220638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 9220638 is about 3036.5503453755. The cubic root of 9220638 is about 209.6944763519.

The spelling of 9220638 in words is "nine million, two hundred twenty thousand, six hundred thirty-eight".