13520916 has 36 divisors (see below), whose sum is σ = 36189972. Its totient is φ = 4241664.

The previous prime is 13520911. The next prime is 13520917. The reversal of 13520916 is 61902531.

It can be written as a sum of positive squares in 2 ways, for example, as 11532816 + 1988100 = 3396^2 + 1410^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13520916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10435 + ... + 11658.

It is an arithmetic number, because the mean of its divisors is an integer number (1005277).

Almost surely, 2^13520916 is an apocalyptic number.

It is an amenable number.

13520916 is an abundant number, since it is smaller than the sum of its proper divisors (22669056).

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

13520916 is a wasteful number, since it uses less digits than its factorization.

13520916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22120 (or 22115 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 13520916 is about 3677.0798196395. The cubic root of 13520916 is about 238.2330650105.

The spelling of 13520916 in words is "thirteen million, five hundred twenty thousand, nine hundred sixteen".