891168 has 24 divisors (see below), whose sum is σ = 2339568. Its totient is φ = 297024.

The previous prime is 891161. The next prime is 891173. The reversal of 891168 is 861198.

It is a tau number, because it is divible by the number of its divisors (24).

891168 is a strobogrammatic number because it is the same when read upside-down.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (891161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4546 + ... + 4737.

It is an arithmetic number, because the mean of its divisors is an integer number (97482).

2⁸⁹¹¹⁶⁸ is an apocalyptic number.

It is an amenable number.

891168 is an abundant number, since it is smaller than the sum of its proper divisors (1448400).

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

891168 is a wasteful number, since it uses less digits than its factorization.

891168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9296 (or 9288 counting only the distinct ones).

The product of its digits is 3456, while the sum is 33.

The square root of 891168 is about 944.0169490004. The cubic root of 891168 is about 96.2320773960.

The spelling of 891168 in words is "eight hundred ninety-one thousand, one hundred sixty-eight".