13405308 has 48 divisors (see below), whose sum is σ = 36986880. Its totient is φ = 3697344.

The previous prime is 13405307. The next prime is 13405309. The reversal of 13405308 is 80350431.

13405308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13405307) and next prime (13405309).

It is a super-3 number, since 3×13405308³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13405307) 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, 316 + ... + 5187.

It is an arithmetic number, because the mean of its divisors is an integer number (770560).

Almost surely, 2^13405308 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 13405308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18493440).

13405308 is an abundant number, since it is smaller than the sum of its proper divisors (23581572).

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

13405308 is a wasteful number, since it uses less digits than its factorization.

13405308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546 (or 5544 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 13405308 is about 3661.3259893104. The cubic root of 13405308 is about 237.5521318617.

Adding to 13405308 its reverse (80350431), we get a palindrome (93755739).

The spelling of 13405308 in words is "thirteen million, four hundred five thousand, three hundred eight".