26826881 has 4 divisors (see below), whose sum is σ = 26842452. Its totient is φ = 26811312.

The previous prime is 26826871. The next prime is 26826889. The reversal of 26826881 is 18862862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18862862 = 2 ⋅9431431.

It can be written as a sum of positive squares in 2 ways, for example, as 3940225 + 22886656 = 1985^2 + 4784^2 .

It is a cyclic number.

It is not a de Polignac number, because 26826881 - 2⁶ = 26826817 is a prime.

It is a super-2 number, since 2×26826881² = 1439363088376322, 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 (26826889) 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, 4826 + ... + 8771.

It is an arithmetic number, because the mean of its divisors is an integer number (6710613).

Almost surely, 2^26826881 is an apocalyptic number.

It is an amenable number.

26826881 is a deficient number, since it is larger than the sum of its proper divisors (15571).

26826881 is a wasteful number, since it uses less digits than its factorization.

26826881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15570.

The product of its digits is 73728, while the sum is 41.

The square root of 26826881 is about 5179.4672505963. The cubic root of 26826881 is about 299.3574432371.

The spelling of 26826881 in words is "twenty-six million, eight hundred twenty-six thousand, eight hundred eighty-one".