13128914 has 4 divisors (see below), whose sum is σ = 19693374. Its totient is φ = 6564456.

The previous prime is 13128901. The next prime is 13128917. The reversal of 13128914 is 41982131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13082689 + 46225 = 3617^2 + 215^2 .

It is not an unprimeable number, because it can be changed into a prime (13128917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282227 + ... + 3282230.

Almost surely, 2^13128914 is an apocalyptic number.

13128914 is a deficient number, since it is larger than the sum of its proper divisors (6564460).

13128914 is an equidigital number, since it uses as much as digits as its factorization.

13128914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6564459.

The product of its digits is 1728, while the sum is 29.

The square root of 13128914 is about 3623.3843296013. The cubic root of 13128914 is about 235.9081443734.

The spelling of 13128914 in words is "thirteen million, one hundred twenty-eight thousand, nine hundred fourteen".