13240218 has 16 divisors (see below), whose sum is σ = 26551296. Its totient is φ = 4401600.

The previous prime is 13240217. The next prime is 13240223. The reversal of 13240218 is 81204231.

It is a junction number, because it is equal to n+sod(n) for n = 13240194 and 13240203.

It is not an unprimeable number, because it can be changed into a prime (13240217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346 + ... + 5157.

It is an arithmetic number, because the mean of its divisors is an integer number (1659456).

Almost surely, 2^13240218 is an apocalyptic number.

13240218 is an abundant number, since it is smaller than the sum of its proper divisors (13311078).

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

13240218 is a wasteful number, since it uses less digits than its factorization.

13240218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5909.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 13240218 is about 3638.7110355179. The cubic root of 13240218 is about 236.5729281177.

Adding to 13240218 its reverse (81204231), we get a palindrome (94444449).

The spelling of 13240218 in words is "thirteen million, two hundred forty thousand, two hundred eighteen".