13409648 has 40 divisors (see below), whose sum is σ = 30152832. Its totient is φ = 5658048.

The previous prime is 13409647. The next prime is 13409653. The reversal of 13409648 is 84690431.

13409648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13409647) 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, 6611 + ... + 8397.

Almost surely, 2^13409648 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 13409648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15076416).

13409648 is an abundant number, since it is smaller than the sum of its proper divisors (16743184).

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

13409648 is a wasteful number, since it uses less digits than its factorization.

13409648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 13409648 is about 3661.9186227987. The cubic root of 13409648 is about 237.5777651161.

The spelling of 13409648 in words is "thirteen million, four hundred nine thousand, six hundred forty-eight".