12509210 has 40 divisors (see below), whose sum is σ = 26318196. Its totient is φ = 4280640.

The previous prime is 12509197. The next prime is 12509221. The reversal of 12509210 is 1290521.

12509210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12103441 + 405769 = 3479^2 + 637^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23750 + ... + 24270.

Almost surely, 2^12509210 is an apocalyptic number.

12509210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12509210 is an abundant number, since it is smaller than the sum of its proper divisors (13808986).

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

12509210 is an frugal number, since it uses more digits than its factorization.

12509210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 12509210 is about 3536.8361567932. The cubic root of 12509210 is about 232.1364263984.

Adding to 12509210 its reverse (1290521), we get a palindrome (13799731).

The spelling of 12509210 in words is "twelve million, five hundred nine thousand, two hundred ten".