12535240 has 16 divisors (see below), whose sum is σ = 28204380. Its totient is φ = 5014080.

The previous prime is 12535219. The next prime is 12535247. The reversal of 12535240 is 4253521.

It can be written as a sum of positive squares in 2 ways, for example, as 11655396 + 879844 = 3414^2 + 938^2 .

It is not an unprimeable number, because it can be changed into a prime (12535247) 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 3 ways as a sum of consecutive naturals, for example, 156651 + ... + 156730.

Almost surely, 2^12535240 is an apocalyptic number.

12535240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12535240 is an abundant number, since it is smaller than the sum of its proper divisors (15669140).

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

12535240 is a wasteful number, since it uses less digits than its factorization.

12535240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313392 (or 313388 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 12535240 is about 3540.5140869653. The cubic root of 12535240 is about 232.2973298393.

Adding to 12535240 its reverse (4253521), we get a palindrome (16788761).

The spelling of 12535240 in words is "twelve million, five hundred thirty-five thousand, two hundred forty".