26861271 has 4 divisors (see below), whose sum is σ = 35815032. Its totient is φ = 17907512.

The previous prime is 26861257. The next prime is 26861281. The reversal of 26861271 is 17216862.

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

It is a cyclic number.

It is not a de Polignac number, because 26861271 - 2¹⁰ = 26860247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26861201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4476876 + ... + 4476881.

It is an arithmetic number, because the mean of its divisors is an integer number (8953758).

Almost surely, 2^26861271 is an apocalyptic number.

26861271 is a deficient number, since it is larger than the sum of its proper divisors (8953761).

26861271 is an equidigital number, since it uses as much as digits as its factorization.

26861271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8953760.

The product of its digits is 8064, while the sum is 33.

The square root of 26861271 is about 5182.7860268392. The cubic root of 26861271 is about 299.4853063621.

The spelling of 26861271 in words is "twenty-six million, eight hundred sixty-one thousand, two hundred seventy-one".