13309248 has 56 divisors (see below), whose sum is σ = 35608768. Its totient is φ = 4386816.

The previous prime is 13309243. The next prime is 13309271. The reversal of 13309248 is 84290331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13309243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19440 + ... + 20112.

Almost surely, 2^13309248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13309248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17804384).

13309248 is an abundant number, since it is smaller than the sum of its proper divisors (22299520).

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

13309248 is a wasteful number, since it uses less digits than its factorization.

13309248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 13309248 is about 3648.1842058756. The cubic root of 13309248 is about 236.9833526379.

Adding to 13309248 its reverse (84290331), we get a palindrome (97599579).

The spelling of 13309248 in words is "thirteen million, three hundred nine thousand, two hundred forty-eight".