26840864 has 12 divisors (see below), whose sum is σ = 52843014. Its totient is φ = 13420416.

The previous prime is 26840837. The next prime is 26840867. The reversal of 26840864 is 46804862.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26832400 + 8464 = 5180^2 + 92^2 .

It is not an unprimeable number, because it can be changed into a prime (26840867) 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 as a sum of consecutive naturals, namely, 419357 + ... + 419420.

Almost surely, 2^26840864 is an apocalyptic number.

It is an amenable number.

26840864 is a deficient number, since it is larger than the sum of its proper divisors (26002150).

26840864 is an equidigital number, since it uses as much as digits as its factorization.

26840864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838787 (or 838779 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 26840864 is about 5180.8169239995. The cubic root of 26840864 is about 299.4094456554.

The spelling of 26840864 in words is "twenty-six million, eight hundred forty thousand, eight hundred sixty-four".