13020018 has 16 divisors (see below), whose sum is σ = 28407456. Its totient is φ = 3945440.

The previous prime is 13020017. The next prime is 13020037. The reversal of 13020018 is 81002031.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13019979 and 13020006.

It is not an unprimeable number, because it can be changed into a prime (13020017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98571 + ... + 98702.

It is an arithmetic number, because the mean of its divisors is an integer number (1775466).

Almost surely, 2^13020018 is an apocalyptic number.

13020018 is an abundant number, since it is smaller than the sum of its proper divisors (15387438).

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

13020018 is a wasteful number, since it uses less digits than its factorization.

13020018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197289.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 13020018 is about 3608.3262047659. The cubic root of 13020018 is about 235.2540966663.

Adding to 13020018 its reverse (81002031), we get a palindrome (94022049).

The spelling of 13020018 in words is "thirteen million, twenty thousand, eighteen".