26856646 has 8 divisors (see below), whose sum is σ = 41142240. Its totient is φ = 13142568.

The previous prime is 26856629. The next prime is 26856647. The reversal of 26856646 is 64665862.

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

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 3 ways as a sum of consecutive naturals, for example, 142761 + ... + 142948.

It is an arithmetic number, because the mean of its divisors is an integer number (5142780).

Almost surely, 2^26856646 is an apocalyptic number.

26856646 is a deficient number, since it is larger than the sum of its proper divisors (14285594).

26856646 is a wasteful number, since it uses less digits than its factorization.

26856646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285758.

The product of its digits is 414720, while the sum is 43.

The square root of 26856646 is about 5182.3398190393. The cubic root of 26856646 is about 299.4681168175.

The spelling of 26856646 in words is "twenty-six million, eight hundred fifty-six thousand, six hundred forty-six".