13505120 has 24 divisors (see below), whose sum is σ = 31906224. Its totient is φ = 5401984.

The previous prime is 13505099. The next prime is 13505137. The reversal of 13505120 is 2150531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42044 + ... + 42363.

It is an arithmetic number, because the mean of its divisors is an integer number (1329426).

Almost surely, 2^13505120 is an apocalyptic number.

13505120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13505120 is an abundant number, since it is smaller than the sum of its proper divisors (18401104).

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

13505120 is an equidigital number, since it uses as much as digits as its factorization.

13505120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84422 (or 84414 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 13505120 is about 3674.9312918747. The cubic root of 13505120 is about 238.1402558179.

Adding to 13505120 its reverse (2150531), we get a palindrome (15655651).

The spelling of 13505120 in words is "thirteen million, five hundred five thousand, one hundred twenty".