13409808 has 80 divisors (see below), whose sum is σ = 36336960. Its totient is φ = 4257792.

The previous prime is 13409807. The next prime is 13409819. The reversal of 13409808 is 80890431.

It is not an unprimeable number, because it can be changed into a prime (13409807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150628 + ... + 150716.

It is an arithmetic number, because the mean of its divisors is an integer number (454212).

Almost surely, 2^13409808 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 13409808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18168480).

13409808 is an abundant number, since it is smaller than the sum of its proper divisors (22927152).

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

13409808 is a wasteful number, since it uses less digits than its factorization.

13409808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 13409808 is about 3661.9404692048. The cubic root of 13409808 is about 237.5787100152.

The spelling of 13409808 in words is "thirteen million, four hundred nine thousand, eight hundred eight".