789128 has 8 divisors (see below), whose sum is σ = 1479630. Its totient is φ = 394560.

The previous prime is 789121. The next prime is 789133. The reversal of 789128 is 821987.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 643204 + 145924 = 802^2 + 382^2 .

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

It is not an unprimeable number, because it can be changed into a prime (789121) by changing a digit.

789128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49313 + ... + 49328.

2⁷⁸⁹¹²⁸ is an apocalyptic number.

It is an amenable number.

789128 is a deficient number, since it is larger than the sum of its proper divisors (690502).

789128 is a wasteful number, since it uses less digits than its factorization.

789128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98647 (or 98643 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 789128 is about 888.3287679683. The cubic root of 789128 is about 92.4093292180.

The spelling of 789128 in words is "seven hundred eighty-nine thousand, one hundred twenty-eight".