9169728 has 56 divisors (see below), whose sum is σ = 24493728. Its totient is φ = 3027456.

The previous prime is 9169717. The next prime is 9169733. The reversal of 9169728 is 8279619.

It is a self number, because there is not a number n which added to its sum of digits gives 9169728.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31150 + ... + 31442.

It is an arithmetic number, because the mean of its divisors is an integer number (437388).

Almost surely, 2^9169728 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 9169728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12246864).

9169728 is an abundant number, since it is smaller than the sum of its proper divisors (15324000).

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

9169728 is a wasteful number, since it uses less digits than its factorization.

9169728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 461 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The square root of 9169728 is about 3028.1558744556. The cubic root of 9169728 is about 209.3078344895.

The spelling of 9169728 in words is "nine million, one hundred sixty-nine thousand, seven hundred twenty-eight".