26856859 has 4 divisors (see below), whose sum is σ = 27312120. Its totient is φ = 26401600.

The previous prime is 26856839. The next prime is 26856877. The reversal of 26856859 is 95865862.

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 26856859 - 2⁵ = 26856827 is a prime.

It is a super-3 number, since 3×26856859³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26856839) 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, 227542 + ... + 227659.

It is an arithmetic number, because the mean of its divisors is an integer number (6828030).

Almost surely, 2^26856859 is an apocalyptic number.

26856859 is a deficient number, since it is larger than the sum of its proper divisors (455261).

26856859 is an equidigital number, since it uses as much as digits as its factorization.

26856859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455260.

The product of its digits is 1036800, while the sum is 49.

The square root of 26856859 is about 5182.3603695613. The cubic root of 26856859 is about 299.4689085091.

The spelling of 26856859 in words is "twenty-six million, eight hundred fifty-six thousand, eight hundred fifty-nine".