16891168 has 24 divisors (see below), whose sum is σ = 38005632. Its totient is φ = 7238976.

The previous prime is 16891163. The next prime is 16891181. The reversal of 16891168 is 86119861.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16891168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16891163) 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, 37480 + ... + 37927.

It is an arithmetic number, because the mean of its divisors is an integer number (1583568).

Almost surely, 2^16891168 is an apocalyptic number.

It is an amenable number.

16891168 is an abundant number, since it is smaller than the sum of its proper divisors (21114464).

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

16891168 is an equidigital number, since it uses as much as digits as its factorization.

16891168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75424 (or 75416 counting only the distinct ones).

The product of its digits is 20736, while the sum is 40.

The square root of 16891168 is about 4109.8866164409. The cubic root of 16891168 is about 256.5782825682.

The spelling of 16891168 in words is "sixteen million, eight hundred ninety-one thousand, one hundred sixty-eight".