26991168 has 56 divisors (see below), whose sum is σ = 71823072. Its totient is φ = 8945664.

The previous prime is 26991163. The next prime is 26991169. The reversal of 26991168 is 86119962.

It is not an unprimeable number, because it can be changed into a prime (26991163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49071 + ... + 49617.

Almost surely, 2^26991168 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 26991168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35911536).

26991168 is an abundant number, since it is smaller than the sum of its proper divisors (44831904).

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

26991168 is a wasteful number, since it uses less digits than its factorization.

26991168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 809 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 26991168 is about 5195.3024935994. The cubic root of 26991168 is about 299.9672853215.

The spelling of 26991168 in words is "twenty-six million, nine hundred ninety-one thousand, one hundred sixty-eight".