26798881 has 4 divisors (see below), whose sum is σ = 26834500. Its totient is φ = 26763264.

The previous prime is 26798843. The next prime is 26798909. The reversal of 26798881 is 18889762.

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 4558225 + 22240656 = 2135^2 + 4716^2 .

It is a cyclic number.

It is not a de Polignac number, because 26798881 - 2¹³ = 26790689 is a prime.

It is a super-2 number, since 2×26798881² = 1436360045704322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26798281) 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, 16656 + ... + 18193.

It is an arithmetic number, because the mean of its divisors is an integer number (6708625).

Almost surely, 2^26798881 is an apocalyptic number.

It is an amenable number.

26798881 is a deficient number, since it is larger than the sum of its proper divisors (35619).

26798881 is an equidigital number, since it uses as much as digits as its factorization.

26798881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35618.

The product of its digits is 387072, while the sum is 49.

The square root of 26798881 is about 5176.7635642359. The cubic root of 26798881 is about 299.2532576097.

The spelling of 26798881 in words is "twenty-six million, seven hundred ninety-eight thousand, eight hundred eighty-one".