13128512 has 14 divisors (see below), whose sum is σ = 26052018. Its totient is φ = 6564224.

The previous prime is 13128499. The next prime is 13128517. The reversal of 13128512 is 21582131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10086976 + 3041536 = 3176^2 + 1744^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13128517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102503 + ... + 102630.

Almost surely, 2^13128512 is an apocalyptic number.

It is an amenable number.

13128512 is a deficient number, since it is larger than the sum of its proper divisors (12923506).

13128512 is an equidigital number, since it uses as much as digits as its factorization.

13128512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205145 (or 205135 counting only the distinct ones).

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

The square root of 13128512 is about 3623.3288561763. The cubic root of 13128512 is about 235.9057365570.

The spelling of 13128512 in words is "thirteen million, one hundred twenty-eight thousand, five hundred twelve".