13506018 has 16 divisors (see below), whose sum is σ = 27883776. Its totient is φ = 4356720.

The previous prime is 13506011. The next prime is 13506019. The reversal of 13506018 is 81060531.

13506018 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13506011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36121 + ... + 36492.

It is an arithmetic number, because the mean of its divisors is an integer number (1742736).

Almost surely, 2^13506018 is an apocalyptic number.

13506018 is an abundant number, since it is smaller than the sum of its proper divisors (14377758).

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

13506018 is a wasteful number, since it uses less digits than its factorization.

13506018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72649.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 13506018 is about 3675.0534689988. The cubic root of 13506018 is about 238.1455339448.

Adding to 13506018 its reverse (81060531), we get a palindrome (94566549).

The spelling of 13506018 in words is "thirteen million, five hundred six thousand, eighteen".