26856645 has 8 divisors (see below), whose sum is σ = 42970656. Its totient is φ = 14323536.

The previous prime is 26856629. The next prime is 26856647. The reversal of 26856645 is 54665862.

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

It is not a de Polignac number, because 26856645 - 2⁴ = 26856629 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26856597 and 26856606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26856647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895207 + ... + 895236.

It is an arithmetic number, because the mean of its divisors is an integer number (5371332).

Almost surely, 2^26856645 is an apocalyptic number.

It is an amenable number.

26856645 is a deficient number, since it is larger than the sum of its proper divisors (16114011).

26856645 is a wasteful number, since it uses less digits than its factorization.

26856645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790451.

The product of its digits is 345600, while the sum is 42.

The square root of 26856645 is about 5182.3397225578. The cubic root of 26856645 is about 299.4681131006.

The spelling of 26856645 in words is "twenty-six million, eight hundred fifty-six thousand, six hundred forty-five".