9169920 has 132 divisors (see below), whose sum is σ = 31933200. Its totient is φ = 2433024.

The previous prime is 9169889. The next prime is 9169921. The reversal of 9169920 is 299619.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9169921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45981 + ... + 46179.

Almost surely, 2^9169920 is an apocalyptic number.

9169920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9169920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15966600).

9169920 is an abundant number, since it is smaller than the sum of its proper divisors (22763280).

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

9169920 is a wasteful number, since it uses less digits than its factorization.

9169920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 9169920 is about 3028.1875767528. The cubic root of 9169920 is about 209.3092953407.

It can be divided in two parts, 91699 and 20, that added together give a palindrome (91719).

The spelling of 9169920 in words is "nine million, one hundred sixty-nine thousand, nine hundred twenty".