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326 = 2163

326 has 4 divisors (see below), whose sum is σ = 492. Its totient is φ = 162.

The previous prime is 317. The next prime is 331. The reversal of 326 is 623.

It is a happy number.

326 is nontrivially palindromic in base 12 and base 13.

326 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 623 = 789.

It is a pancake number, because a pancake can be divided into 326 parts by 25 straight cuts.

326 is an undulating number in base 12 and base 13.

It is a Curzon number.

It is a plaindrome in base 11, base 15 and base 16.

It is a nialpdrome in base 7.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 326.

It is an unprimeable number.

326 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80 + ... + 83.

It is an arithmetic number, because the mean of its divisors is an integer number (123).

326 is a deficient number, since it is larger than the sum of its proper divisors (166).

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

326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165.

The product of its digits is 36, while the sum is 11.

The square root of 326 is about 18.0554700853. The cubic root of 326 is about 6.8823887505.

Adding to 326 its reverse (623), we get a palindrome (949).

It can be divided in two parts, 3 and 26, that multiplied together give a triangular number (78 = T12).

The spelling of 326 in words is "three hundred twenty-six", and thus it is an aban number and an oban number.

Divisors: 1 2 163 326