13857128 has 16 divisors (see below), whose sum is σ = 26878500. Its totient is φ = 6689536.

The previous prime is 13857121. The next prime is 13857131. The reversal of 13857128 is 82175831.

13857128 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 13853284 + 3844 = 3722^2 + 62^2 .

It is not an unprimeable number, because it can be changed into a prime (13857121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29633 + ... + 30096.

Almost surely, 2^13857128 is an apocalyptic number.

It is an amenable number.

13857128 is a deficient number, since it is larger than the sum of its proper divisors (13021372).

13857128 is a wasteful number, since it uses less digits than its factorization.

13857128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59764 (or 59760 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 13857128 is about 3722.5163532213. The cubic root of 13857128 is about 240.1915600254.

The spelling of 13857128 in words is "thirteen million, eight hundred fifty-seven thousand, one hundred twenty-eight".