13345218 has 12 divisors (see below), whose sum is σ = 28914678. Its totient is φ = 4448400.

The previous prime is 13345217. The next prime is 13345223. The reversal of 13345218 is 81254331.

It is a happy number.

13345218 is a `hidden beast` number, since 133 + 4 + 521 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12981609 + 363609 = 3603^2 + 603^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13345191 and 13345200.

It is not an unprimeable number, because it can be changed into a prime (13345217) 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 5 ways as a sum of consecutive naturals, for example, 370683 + ... + 370718.

Almost surely, 2^13345218 is an apocalyptic number.

13345218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13345218 is an abundant number, since it is smaller than the sum of its proper divisors (15569460).

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

13345218 is a wasteful number, since it uses less digits than its factorization.

13345218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741409 (or 741406 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 13345218 is about 3653.1107292279. The cubic root of 13345218 is about 237.1966535287.

Adding to 13345218 its reverse (81254331), we get a palindrome (94599549).

The spelling of 13345218 in words is "thirteen million, three hundred forty-five thousand, two hundred eighteen".