26856905 has 8 divisors (see below), whose sum is σ = 32256384. Its totient is φ = 21466800.

The previous prime is 26856901. The next prime is 26856911. The reversal of 26856905 is 50965862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26856905 - 2² = 26856901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26856901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8720 + ... + 11390.

It is an arithmetic number, because the mean of its divisors is an integer number (4032048).

Almost surely, 2^26856905 is an apocalyptic number.

It is an amenable number.

26856905 is a deficient number, since it is larger than the sum of its proper divisors (5399479).

26856905 is a wasteful number, since it uses less digits than its factorization.

26856905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 26856905 is about 5182.3648076916. The cubic root of 26856905 is about 299.4690794841.

The spelling of 26856905 in words is "twenty-six million, eight hundred fifty-six thousand, nine hundred five".