26853985 has 4 divisors (see below), whose sum is σ = 32224788. Its totient is φ = 21483184.

The previous prime is 26853979. The next prime is 26853989. The reversal of 26853985 is 58935862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7879249 + 18974736 = 2807^2 + 4356^2 .

It is a cyclic number.

It is not a de Polignac number, because 26853985 - 2³ = 26853977 is a prime.

It is a super-2 number, since 2×26853985² = 1442273020760450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26853989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2685394 + ... + 2685403.

It is an arithmetic number, because the mean of its divisors is an integer number (8056197).

Almost surely, 2^26853985 is an apocalyptic number.

It is an amenable number.

26853985 is a deficient number, since it is larger than the sum of its proper divisors (5370803).

26853985 is an equidigital number, since it uses as much as digits as its factorization.

26853985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370802.

The product of its digits is 518400, while the sum is 46.

The square root of 26853985 is about 5182.0830753665. The cubic root of 26853985 is about 299.4582258954.

It can be divided in two parts, 2685398 and 5, that added together give a triangular number (2685403 = T₂₃₁₇).

The spelling of 26853985 in words is "twenty-six million, eight hundred fifty-three thousand, nine hundred eighty-five".