13209648 has 20 divisors (see below), whose sum is σ = 34125048. Its totient is φ = 4403200.

The previous prime is 13209641. The next prime is 13209649. The reversal of 13209648 is 84690231.

It is not an unprimeable number, because it can be changed into a prime (13209641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137553 + ... + 137648.

Almost surely, 2^13209648 is an apocalyptic number.

It is an amenable number.

13209648 is an abundant number, since it is smaller than the sum of its proper divisors (20915400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13209648 is a wasteful number, since it uses less digits than its factorization.

13209648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275212 (or 275206 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 13209648 is about 3634.5079446880. The cubic root of 13209648 is about 236.3907154201.

Adding to 13209648 its reverse (84690231), we get a palindrome (97899879).

The spelling of 13209648 in words is "thirteen million, two hundred nine thousand, six hundred forty-eight".