9180220 has 48 divisors (see below), whose sum is σ = 22998528. Its totient is φ = 3009600.

The previous prime is 9180191. The next prime is 9180239. The reversal of 9180220 is 220819.

It is a junction number, because it is equal to n+sod(n) for n = 9180191 and 9180200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1795 + ... + 4645.

It is an arithmetic number, because the mean of its divisors is an integer number (479136).

Almost surely, 2^9180220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9180220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11499264).

9180220 is an abundant number, since it is smaller than the sum of its proper divisors (13818308).

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

9180220 is a wasteful number, since it uses less digits than its factorization.

9180220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890 (or 2888 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 9180220 is about 3029.8877867010. The cubic root of 9180220 is about 209.3876340486.

The spelling of 9180220 in words is "nine million, one hundred eighty thousand, two hundred twenty".