26981105 has 4 divisors (see below), whose sum is σ = 32377332. Its totient is φ = 21584880.

The previous prime is 26981089. The next prime is 26981117. The reversal of 26981105 is 50118962.

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 7656289 + 19324816 = 2767^2 + 4396^2 .

It is not a de Polignac number, because 26981105 - 2⁴ = 26981089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2698106 + ... + 2698115.

It is an arithmetic number, because the mean of its divisors is an integer number (8094333).

Almost surely, 2^26981105 is an apocalyptic number.

It is an amenable number.

26981105 is a deficient number, since it is larger than the sum of its proper divisors (5396227).

26981105 is an equidigital number, since it uses as much as digits as its factorization.

26981105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396226.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 26981105 is about 5194.3339322766. Note that the first 3 decimals coincide. The cubic root of 26981105 is about 299.9300021875.

The spelling of 26981105 in words is "twenty-six million, nine hundred eighty-one thousand, one hundred five".