26013861 has 6 divisors (see below), whose sum is σ = 37575590. Its totient is φ = 17342568.

The previous prime is 26013857. The next prime is 26013913. The reversal of 26013861 is 16831062.

It can be written as a sum of positive squares in only one way, i.e., 25948836 + 65025 = 5094^2 + 255^2 .

It is not a de Polignac number, because 26013861 - 2² = 26013857 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 (26013461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1445206 + ... + 1445223.

Almost surely, 2^26013861 is an apocalyptic number.

It is an amenable number.

26013861 is a deficient number, since it is larger than the sum of its proper divisors (11561729).

26013861 is a wasteful number, since it uses less digits than its factorization.

26013861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890435 (or 2890432 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 26013861 is about 5100.3785153653. The cubic root of 26013861 is about 296.3022425626.

The spelling of 26013861 in words is "twenty-six million, thirteen thousand, eight hundred sixty-one".