1385128 has 8 divisors (see below), whose sum is σ = 2597130. Its totient is φ = 692560.

The previous prime is 1385117. The next prime is 1385147. The reversal of 1385128 is 8215831.

It can be written as a sum of positive squares in only one way, i.e., 925444 + 459684 = 962^2 + 678^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1385096 and 1385105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86563 + ... + 86578.

2^1385128 is an apocalyptic number.

It is an amenable number.

1385128 is a deficient number, since it is larger than the sum of its proper divisors (1212002).

1385128 is a wasteful number, since it uses less digits than its factorization.

1385128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173147 (or 173143 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 1385128 is about 1176.9146103265. The cubic root of 1385128 is about 111.4713607932.

The spelling of 1385128 in words is "one million, three hundred eighty-five thousand, one hundred twenty-eight".