12752218 has 8 divisors (see below), whose sum is σ = 19147860. Its totient is φ = 6369600.

The previous prime is 12752183. The next prime is 12752231. The reversal of 12752218 is 81225721.

It can be written as a sum of positive squares in 2 ways, for example, as 7006609 + 5745609 = 2647^2 + 2397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 253 + ... + 5056.

Almost surely, 2^12752218 is an apocalyptic number.

12752218 is a deficient number, since it is larger than the sum of its proper divisors (6395642).

12752218 is a wasteful number, since it uses less digits than its factorization.

12752218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512.

The product of its digits is 2240, while the sum is 28.

The square root of 12752218 is about 3571.0247828880. The cubic root of 12752218 is about 233.6299823318.

Adding to 12752218 its reverse (81225721), we get a palindrome (93977939).

The spelling of 12752218 in words is "twelve million, seven hundred fifty-two thousand, two hundred eighteen".