13530216 has 32 divisors (see below), whose sum is σ = 38658240. Its totient is φ = 3865728.

The previous prime is 13530203. The next prime is 13530259. The reversal of 13530216 is 61203531.

13530216 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

13530216 is strictly pandigital in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 13530192 and 13530201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40101 + ... + 40436.

It is an arithmetic number, because the mean of its divisors is an integer number (1208070).

Almost surely, 2^13530216 is an apocalyptic number.

It is an amenable number.

13530216 is an abundant number, since it is smaller than the sum of its proper divisors (25128024).

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

13530216 is a wasteful number, since it uses less digits than its factorization.

13530216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80553 (or 80549 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 13530216 is about 3678.3441927041. The cubic root of 13530216 is about 238.2876732369.

Adding to 13530216 its reverse (61203531), we get a palindrome (74733747).

The spelling of 13530216 in words is "thirteen million, five hundred thirty thousand, two hundred sixteen".