26413861 has 4 divisors (see below), whose sum is σ = 26656300. Its totient is φ = 26171424.

The previous prime is 26413853. The next prime is 26413883. The reversal of 26413861 is 16831462.

It is a happy number.

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 15484225 + 10929636 = 3935^2 + 3306^2 .

It is a cyclic number.

It is not a de Polignac number, because 26413861 - 2³ = 26413853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26413811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121056 + ... + 121273.

It is an arithmetic number, because the mean of its divisors is an integer number (6664075).

Almost surely, 2^26413861 is an apocalyptic number.

It is an amenable number.

26413861 is a deficient number, since it is larger than the sum of its proper divisors (242439).

26413861 is a wasteful number, since it uses less digits than its factorization.

26413861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242438.

The product of its digits is 6912, while the sum is 31.

The square root of 26413861 is about 5139.4417011967. The cubic root of 26413861 is about 297.8132134271.

The spelling of 26413861 in words is "twenty-six million, four hundred thirteen thousand, eight hundred sixty-one".