13026321 has 24 divisors (see below), whose sum is σ = 23459904. Its totient is φ = 6766560.

The previous prime is 13026319. The next prime is 13026323. The reversal of 13026321 is 12362031.

13026321 is a `hidden beast` number, since 1 + 30 + 2 + 632 + 1 = 666.

13026321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13026319) and next prime (13026323).

It is not a de Polignac number, because 13026321 - 2¹ = 13026319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13026294 and 13026303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13026323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8706 + ... + 10091.

It is an arithmetic number, because the mean of its divisors is an integer number (977496).

Almost surely, 2^13026321 is an apocalyptic number.

13026321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13026321 is a deficient number, since it is larger than the sum of its proper divisors (10433583).

13026321 is a wasteful number, since it uses less digits than its factorization.

13026321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18821 (or 18818 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 13026321 is about 3609.1994957331. The cubic root of 13026321 is about 235.2920527674.

Adding to 13026321 its reverse (12362031), we get a palindrome (25388352).

The spelling of 13026321 in words is "thirteen million, twenty-six thousand, three hundred twenty-one".