26328481 has 4 divisors (see below), whose sum is σ = 26465092. Its totient is φ = 26191872.

The previous prime is 26328473. The next prime is 26328487. The reversal of 26328481 is 18482362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18482362 = 2 ⋅9241181.

It can be written as a sum of positive squares in 2 ways, for example, as 18627856 + 7700625 = 4316^2 + 2775^2 .

It is a cyclic number.

It is not a de Polignac number, because 26328481 - 2³ = 26328473 is a prime.

It is a super-2 number, since 2×26328481² = 1386377823534722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26328487) 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, 68016 + ... + 68401.

It is an arithmetic number, because the mean of its divisors is an integer number (6616273).

Almost surely, 2^26328481 is an apocalyptic number.

It is an amenable number.

26328481 is a deficient number, since it is larger than the sum of its proper divisors (136611).

26328481 is a wasteful number, since it uses less digits than its factorization.

26328481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136610.

The product of its digits is 18432, while the sum is 34.

The square root of 26328481 is about 5131.1286282844. The cubic root of 26328481 is about 297.4919838718.

The spelling of 26328481 in words is "twenty-six million, three hundred twenty-eight thousand, four hundred eighty-one".