26197427 has 4 divisors (see below), whose sum is σ = 26529120. Its totient is φ = 25865736.

The previous prime is 26197421. The next prime is 26197441. The reversal of 26197427 is 72479162.

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 26197427 - 2¹⁰ = 26196403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26197421) 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, 165728 + ... + 165885.

It is an arithmetic number, because the mean of its divisors is an integer number (6632280).

Almost surely, 2^26197427 is an apocalyptic number.

26197427 is a deficient number, since it is larger than the sum of its proper divisors (331693).

26197427 is an equidigital number, since it uses as much as digits as its factorization.

26197427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331692.

The product of its digits is 42336, while the sum is 38.

The square root of 26197427 is about 5118.3422120839. The cubic root of 26197427 is about 296.9975588080.

The spelling of 26197427 in words is "twenty-six million, one hundred ninety-seven thousand, four hundred twenty-seven".