26840671 has 32 divisors (see below), whose sum is σ = 34122816. Its totient is φ = 20736000.

The previous prime is 26840663. The next prime is 26840717. The reversal of 26840671 is 17604862.

It is a 11-Lehmer number, since φ(26840671) divides (26840671-1)¹¹.

It is a cyclic number.

It is not a de Polignac number, because 26840671 - 2³ = 26840663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26840641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148201 + ... + 148381.

It is an arithmetic number, because the mean of its divisors is an integer number (1066338).

Almost surely, 2^26840671 is an apocalyptic number.

26840671 is a deficient number, since it is larger than the sum of its proper divisors (7282145).

26840671 is a wasteful number, since it uses less digits than its factorization.

26840671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 26840671 is about 5180.7982975599. The cubic root of 26840671 is about 299.4087280163.

The spelling of 26840671 in words is "twenty-six million, eight hundred forty thousand, six hundred seventy-one".