13321826 has 12 divisors (see below), whose sum is σ = 23245398. Its totient is φ = 5709312.

The previous prime is 13321823. The next prime is 13321837. The reversal of 13321826 is 62812331.

It can be written as a sum of positive squares in only one way, i.e., 9616201 + 3705625 = 3101^2 + 1925^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13321795 and 13321804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321823) 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 5 ways as a sum of consecutive naturals, for example, 67871 + ... + 68066.

Almost surely, 2^13321826 is an apocalyptic number.

13321826 is a deficient number, since it is larger than the sum of its proper divisors (9923572).

13321826 is a wasteful number, since it uses less digits than its factorization.

13321826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135953 (or 135946 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 13321826 is about 3649.9076700651. The cubic root of 13321826 is about 237.0579834035.

The spelling of 13321826 in words is "thirteen million, three hundred twenty-one thousand, eight hundred twenty-six".