13263520 has 48 divisors (see below), whose sum is σ = 32991840. Its totient is φ = 5025024.

The previous prime is 13263493. The next prime is 13263529. The reversal of 13263520 is 2536231.

It is a junction number, because it is equal to n+sod(n) for n = 13263491 and 13263500.

It is not an unprimeable number, because it can be changed into a prime (13263529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859 + ... + 5221.

It is an arithmetic number, because the mean of its divisors is an integer number (687330).

Almost surely, 2^13263520 is an apocalyptic number.

13263520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13263520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16495920).

13263520 is an abundant number, since it is smaller than the sum of its proper divisors (19728320).

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

13263520 is a wasteful number, since it uses less digits than its factorization.

13263520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397 (or 4389 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 13263520 is about 3641.9115859669. The cubic root of 13263520 is about 236.7116315631.

Adding to 13263520 its reverse (2536231), we get a palindrome (15799751).

The spelling of 13263520 in words is "thirteen million, two hundred sixty-three thousand, five hundred twenty".