9220138 has 16 divisors (see below), whose sum is σ = 14222880. Its totient is φ = 4481136.

The previous prime is 9220117. The next prime is 9220147. The reversal of 9220138 is 8310229.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10708 + ... + 11536.

It is an arithmetic number, because the mean of its divisors is an integer number (888930).

Almost surely, 2^9220138 is an apocalyptic number.

9220138 is a deficient number, since it is larger than the sum of its proper divisors (5002742).

9220138 is a wasteful number, since it uses less digits than its factorization.

9220138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 9220138 is about 3036.4680139926. The cubic root of 9220138 is about 209.6906859731.

Subtracting from 9220138 its reverse (8310229), we obtain a palindrome (909909).

The spelling of 9220138 in words is "nine million, two hundred twenty thousand, one hundred thirty-eight".