26138671 has 4 divisors (see below), whose sum is σ = 28149352. Its totient is φ = 24127992.

The previous prime is 26138669. The next prime is 26138681. The reversal of 26138671 is 17683162.

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 26138671 - 2¹ = 26138669 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 (26138681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005321 + ... + 1005346.

It is an arithmetic number, because the mean of its divisors is an integer number (7037338).

Almost surely, 2^26138671 is an apocalyptic number.

26138671 is a deficient number, since it is larger than the sum of its proper divisors (2010681).

26138671 is a wasteful number, since it uses less digits than its factorization.

26138671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010680.

The product of its digits is 12096, while the sum is 34.

The square root of 26138671 is about 5112.5992410906. The cubic root of 26138671 is about 296.7753556778.

The spelling of 26138671 in words is "twenty-six million, one hundred thirty-eight thousand, six hundred seventy-one".