13211648 has 24 divisors (see below), whose sum is σ = 26420940. Its totient is φ = 6604800.

The previous prime is 13211641. The next prime is 13211657. The reversal of 13211648 is 84611231.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1178 + ... + 5273.

Almost surely, 2^13211648 is an apocalyptic number.

It is an amenable number.

13211648 is a deficient number, since it is larger than the sum of its proper divisors (13209292).

13211648 is an frugal number, since it uses more digits than its factorization.

13211648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6473 (or 6453 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 13211648 is about 3634.7830746827. The cubic root of 13211648 is about 236.4026450231.

Adding to 13211648 its reverse (84611231), we get a palindrome (97822879).

The spelling of 13211648 in words is "thirteen million, two hundred eleven thousand, six hundred forty-eight".