128057938 has 16 divisors (see below), whose sum is σ = 193886784. Its totient is φ = 63431920.

The previous prime is 128057933. The next prime is 128057947. The reversal of 128057938 is 839750821.

It is a junction number, because it is equal to n+sod(n) for n = 128057894 and 128057903.

It is not an unprimeable number, because it can be changed into a prime (128057933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155568 + ... + 156388.

It is an arithmetic number, because the mean of its divisors is an integer number (12117924).

Almost surely, 2^128057938 is an apocalyptic number.

128057938 is a deficient number, since it is larger than the sum of its proper divisors (65828846).

128057938 is a wasteful number, since it uses less digits than its factorization.

128057938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 128057938 is about 11316.2687313443. The cubic root of 128057938 is about 504.0444473483.

The spelling of 128057938 in words is "one hundred twenty-eight million, fifty-seven thousand, nine hundred thirty-eight".