13505808 has 80 divisors (see below), whose sum is σ = 37497600. Its totient is φ = 4176000.

The previous prime is 13505783. The next prime is 13505809. The reversal of 13505808 is 80850531.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13505809) 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, 53683 + ... + 53933.

It is an arithmetic number, because the mean of its divisors is an integer number (468720).

Almost surely, 2^13505808 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 13505808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18748800).

13505808 is an abundant number, since it is smaller than the sum of its proper divisors (23991792).

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

13505808 is a wasteful number, since it uses less digits than its factorization.

13505808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 13505808 is about 3675.0248978748. The cubic root of 13505808 is about 238.1442996599.

The spelling of 13505808 in words is "thirteen million, five hundred five thousand, eight hundred eight".