830512128 has 88 divisors (see below), whose sum is σ = 2222386960. Its totient is φ = 275742720.

The previous prime is 830512117. The next prime is 830512141. The reversal of 830512128 is 821215038.

It is a junction number, because it is equal to n+sod(n) for n = 830512095 and 830512104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1256118 + ... + 1256778.

Almost surely, 2^830512128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 830512128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1111193480).

830512128 is an abundant number, since it is smaller than the sum of its proper divisors (1391874832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

830512128 is a wasteful number, since it uses less digits than its factorization.

830512128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 830512128 is about 28818.6073223534. The cubic root of 830512128 is about 939.9728858936.

The spelling of 830512128 in words is "eight hundred thirty million, five hundred twelve thousand, one hundred twenty-eight".