13520016 has 30 divisors (see below), whose sum is σ = 37837670. Its totient is φ = 4506624.

The previous prime is 13520011. The next prime is 13520047. The reversal of 13520016 is 61002531.

It can be written as a sum of positive squares in only one way, i.e., 7290000 + 6230016 = 2700^2 + 2496^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13520011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46801 + ... + 47088.

Almost surely, 2^13520016 is an apocalyptic number.

13520016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13520016 is an abundant number, since it is smaller than the sum of its proper divisors (24317654).

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

13520016 is a wasteful number, since it uses less digits than its factorization.

13520016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93903 (or 93894 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 13520016 is about 3676.9574378826. The cubic root of 13520016 is about 238.2277790147.

Adding to 13520016 its reverse (61002531), we get a palindrome (74522547).

The spelling of 13520016 in words is "thirteen million, five hundred twenty thousand, sixteen".