13520208220 has 48 divisors (see below), whose sum is σ = 29732609088. Its totient is φ = 5154490880.

The previous prime is 13520208203. The next prime is 13520208227. The reversal of 13520208220 is 2280202531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520208227) 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, 76962 + ... + 181558.

It is an arithmetic number, because the mean of its divisors is an integer number (619429356).

Almost surely, 2^13520208220 is an apocalyptic number.

13520208220 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 13520208220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14866304544).

13520208220 is an abundant number, since it is smaller than the sum of its proper divisors (16212400868).

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

13520208220 is a wasteful number, since it uses less digits than its factorization.

13520208220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104910 (or 104908 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 13520208220 in words is "thirteen billion, five hundred twenty million, two hundred eight thousand, two hundred twenty".