13291408 has 20 divisors (see below), whose sum is σ = 27733468. Its totient is φ = 6134400.

The previous prime is 13291403. The next prime is 13291423. The reversal of 13291408 is 80419231.

It is a happy number.

13291408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7683984 + 5607424 = 2772^2 + 2368^2 .

It is not an unprimeable number, because it can be changed into a prime (13291403) 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, 31743 + ... + 32158.

Almost surely, 2^13291408 is an apocalyptic number.

It is an amenable number.

13291408 is an abundant number, since it is smaller than the sum of its proper divisors (14442060).

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

13291408 is a wasteful number, since it uses less digits than its factorization.

13291408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63922 (or 63916 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 13291408 is about 3645.7383340004. The cubic root of 13291408 is about 236.8774194447.

The spelling of 13291408 in words is "thirteen million, two hundred ninety-one thousand, four hundred eight".