830638280 has 16 divisors (see below), whose sum is σ = 1868936220. Its totient is φ = 332255296.
The previous prime is 830638279. The next prime is 830638297. The reversal of 830638280 is 82836038.
It can be written as a sum of positive squares in 2 ways, for example, as 721352164 + 109286116 = 26858^2 + 10454^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10382939 + ... + 10383018.
Almost surely, 2830638280 is an apocalyptic number.
It is an amenable number.
830638280 is an abundant number, since it is smaller than the sum of its proper divisors (1038297940).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
830638280 is a wasteful number, since it uses less digits than its factorization.
830638280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20765968 (or 20765964 counting only the distinct ones).
The product of its (nonzero) digits is 55296, while the sum is 38.
The square root of 830638280 is about 28820.7959640257. The cubic root of 830638280 is about 940.0204763911.
The spelling of 830638280 in words is "eight hundred thirty million, six hundred thirty-eight thousand, two hundred eighty".
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