26401313 has 8 divisors (see below), whose sum is σ = 27201768. Its totient is φ = 25605504.

The previous prime is 26401303. The next prime is 26401337. The reversal of 26401313 is 31310462.

It can be written as a sum of positive squares in 4 ways, for example, as 14922769 + 11478544 = 3863^2 + 3388^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26401313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26401303) 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 7 ways as a sum of consecutive naturals, for example, 12845 + ... + 14757.

It is an arithmetic number, because the mean of its divisors is an integer number (3400221).

Almost surely, 2^26401313 is an apocalyptic number.

It is an amenable number.

26401313 is a deficient number, since it is larger than the sum of its proper divisors (800455).

26401313 is a wasteful number, since it uses less digits than its factorization.

26401313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 26401313 is about 5138.2208010166. The cubic root of 26401313 is about 297.7660468768.

Adding to 26401313 its reverse (31310462), we get a palindrome (57711775).

The spelling of 26401313 in words is "twenty-six million, four hundred one thousand, three hundred thirteen".