12509148 has 48 divisors (see below), whose sum is σ = 30998016. Its totient is φ = 3917760.

The previous prime is 12509143. The next prime is 12509149. The reversal of 12509148 is 84190521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12509143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16465 + ... + 17207.

It is an arithmetic number, because the mean of its divisors is an integer number (645792).

Almost surely, 2^12509148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12509148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15499008).

12509148 is an abundant number, since it is smaller than the sum of its proper divisors (18488868).

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

12509148 is a wasteful number, since it uses less digits than its factorization.

12509148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 12509148 is about 3536.8273918867. The cubic root of 12509148 is about 232.1360428814.

Adding to 12509148 its reverse (84190521), we get a palindrome (96699669).

The spelling of 12509148 in words is "twelve million, five hundred nine thousand, one hundred forty-eight".