26918081 has 4 divisors (see below), whose sum is σ = 26932164. Its totient is φ = 26904000.

The previous prime is 26918071. The next prime is 26918083. The reversal of 26918081 is 18081962.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15249025 + 11669056 = 3905^2 + 3416^2 .

It is a cyclic number.

It is not a de Polignac number, because 26918081 - 2²² = 22723777 is a prime.

It is a super-2 number, since 2×26918081² = 1449166169445122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26918083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3620 + ... + 8181.

It is an arithmetic number, because the mean of its divisors is an integer number (6733041).

Almost surely, 2^26918081 is an apocalyptic number.

It is an amenable number.

26918081 is a deficient number, since it is larger than the sum of its proper divisors (14083).

26918081 is a wasteful number, since it uses less digits than its factorization.

26918081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14082.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 26918081 is about 5188.2637750986. The cubic root of 26918081 is about 299.6962889320.

The spelling of 26918081 in words is "twenty-six million, nine hundred eighteen thousand, eighty-one".