12535218 has 24 divisors (see below), whose sum is σ = 27413100. Its totient is φ = 4139424.

The previous prime is 12535183. The next prime is 12535219. The reversal of 12535218 is 81253521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11675889 + 859329 = 3417^2 + 927^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12535191 and 12535200.

It is not an unprimeable number, because it can be changed into a prime (12535219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1233 + ... + 5156.

Almost surely, 2^12535218 is an apocalyptic number.

12535218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12535218 is an abundant number, since it is smaller than the sum of its proper divisors (14877882).

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

12535218 is a wasteful number, since it uses less digits than its factorization.

12535218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6506 (or 6503 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 12535218 is about 3540.5109800705. The cubic root of 12535218 is about 232.2971939412.

Adding to 12535218 its reverse (81253521), we get a palindrome (93788739).

The spelling of 12535218 in words is "twelve million, five hundred thirty-five thousand, two hundred eighteen".