12513128 has 16 divisors (see below), whose sum is σ = 23549280. Its totient is φ = 6233328.

The previous prime is 12513101. The next prime is 12513157. The reversal of 12513128 is 82131521.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500 + ... + 5027.

It is an arithmetic number, because the mean of its divisors is an integer number (1471830).

Almost surely, 2^12513128 is an apocalyptic number.

It is an amenable number.

12513128 is a deficient number, since it is larger than the sum of its proper divisors (11036152).

12513128 is a wasteful number, since it uses less digits than its factorization.

12513128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5816 (or 5812 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 12513128 is about 3537.3899982897. The cubic root of 12513128 is about 232.1606596254.

Adding to 12513128 its reverse (82131521), we get a palindrome (94644649).

The spelling of 12513128 in words is "twelve million, five hundred thirteen thousand, one hundred twenty-eight".