13020516 has 36 divisors (see below), whose sum is σ = 33248124. Its totient is φ = 4296000.

The previous prime is 13020503. The next prime is 13020523. The reversal of 13020516 is 61502031.

13020516 is a `hidden beast` number, since 130 + 20 + 516 = 666.

13020516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12110400 + 910116 = 3480^2 + 954^2 .

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

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1846 + ... + 5426.

It is an arithmetic number, because the mean of its divisors is an integer number (923559).

Almost surely, 2^13020516 is an apocalyptic number.

It is an amenable number.

13020516 is an abundant number, since it is smaller than the sum of its proper divisors (20227608).

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

13020516 is a wasteful number, since it uses less digits than its factorization.

13020516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692 (or 3687 counting only the distinct ones).

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

The square root of 13020516 is about 3608.3952111707. The cubic root of 13020516 is about 235.2570960233.

Adding to 13020516 its reverse (61502031), we get a palindrome (74522547).

The spelling of 13020516 in words is "thirteen million, twenty thousand, five hundred sixteen".