26856031 has 4 divisors (see below), whose sum is σ = 26881192. Its totient is φ = 26830872.

The previous prime is 26856023. The next prime is 26856077. The reversal of 26856031 is 13065862.

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 26856031 - 2³ = 26856023 is a prime.

It is a super-3 number, since 3×26856031³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26855984 and 26856002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26856331) 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, 10905 + ... + 13138.

It is an arithmetic number, because the mean of its divisors is an integer number (6720298).

Almost surely, 2^26856031 is an apocalyptic number.

26856031 is a deficient number, since it is larger than the sum of its proper divisors (25161).

26856031 is a wasteful number, since it uses less digits than its factorization.

26856031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25160.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 26856031 is about 5182.2804825675. The cubic root of 26856031 is about 299.4658309240.

The spelling of 26856031 in words is "twenty-six million, eight hundred fifty-six thousand, thirty-one".