8391168 has 80 divisors (see below), whose sum is σ = 24879360. Its totient is φ = 2792448.

The previous prime is 8391151. The next prime is 8391197. The reversal of 8391168 is 8611938.

8391168 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13521 + ... + 14127.

It is an arithmetic number, because the mean of its divisors is an integer number (310992).

Almost surely, 2^8391168 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 8391168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12439680).

8391168 is an abundant number, since it is smaller than the sum of its proper divisors (16488192).

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

8391168 is an equidigital number, since it uses as much as digits as its factorization.

8391168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 612 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 8391168 is about 2896.7512837660. The cubic root of 8391168 is about 203.2080018342.

The spelling of 8391168 in words is "eight million, three hundred ninety-one thousand, one hundred sixty-eight".