26891968 has 28 divisors (see below), whose sum is σ = 55686960. Its totient is φ = 12860672.

The previous prime is 26891947. The next prime is 26891983. The reversal of 26891968 is 86919862.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 7663 + ... + 10606.

It is an arithmetic number, because the mean of its divisors is an integer number (1988820).

Almost surely, 2^26891968 is an apocalyptic number.

It is an amenable number.

26891968 is an abundant number, since it is smaller than the sum of its proper divisors (28794992).

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

26891968 is a wasteful number, since it uses less digits than its factorization.

26891968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18304 (or 18294 counting only the distinct ones).

The product of its digits is 373248, while the sum is 49.

The square root of 26891968 is about 5185.7466193404. The cubic root of 26891968 is about 299.5993466426.

The spelling of 26891968 in words is "twenty-six million, eight hundred ninety-one thousand, nine hundred sixty-eight".