26856413 has 8 divisors (see below), whose sum is σ = 29205432. Its totient is φ = 24592896.

The previous prime is 26856397. The next prime is 26856421. The reversal of 26856413 is 31465862.

It can be written as a sum of positive squares in 4 ways, for example, as 7689529 + 19166884 = 2773^2 + 4378^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 26856413 - 2⁴ = 26856397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26856463) 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, 20720 + ... + 21977.

It is an arithmetic number, because the mean of its divisors is an integer number (3650679).

Almost surely, 2^26856413 is an apocalyptic number.

It is an amenable number.

26856413 is a deficient number, since it is larger than the sum of its proper divisors (2349019).

26856413 is a wasteful number, since it uses less digits than its factorization.

26856413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42751.

The product of its digits is 34560, while the sum is 35.

The square root of 26856413 is about 5182.3173387974. The cubic root of 26856413 is about 299.4672507839.

The spelling of 26856413 in words is "twenty-six million, eight hundred fifty-six thousand, four hundred thirteen".