830128 has 30 divisors (see below), whose sum is σ = 1747284. Its totient is φ = 381888.

The previous prime is 830117. The next prime is 830131. The reversal of 830128 is 821038.

It is a super-2 number, since 2×830128² = 1378224992768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 830099 and 830108.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2551 + ... + 2857.

2⁸³⁰¹²⁸ 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 830128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873642).

830128 is an abundant number, since it is smaller than the sum of its proper divisors (917156).

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

830128 is a wasteful number, since it uses less digits than its factorization.

830128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 830128 is about 911.1136043326. The cubic root of 830128 is about 93.9827944969.

The spelling of 830128 in words is "eight hundred thirty thousand, one hundred twenty-eight".