Base | Representation |
---|---|
bin | 11100001000101110… |
… | …010100110111010000 |
3 | 2212222110120120020102 |
4 | 130020232110313100 |
5 | 443333022223010 |
6 | 21513453231532 |
7 | 2116442251415 |
oct | 341056246720 |
9 | 85873516212 |
10 | 30211132880 |
11 | 118a3440315 |
12 | 5a317925a8 |
13 | 2b060497b6 |
14 | 16684c810c |
15 | bbc431ba5 |
hex | 708b94dd0 |
30211132880 has 40 divisors (see below), whose sum is σ = 70257759912. Its totient is φ = 12081549824.
The previous prime is 30211132849. The next prime is 30211132907. The reversal of 30211132880 is 8823111203.
It can be written as a sum of positive squares in 4 ways, for example, as 5832682384 + 24378450496 = 76372^2 + 156136^2 .
It is a tau number, because it is divible by the number of its divisors (40).
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, 306662 + ... + 393018.
Almost surely, 230211132880 is an apocalyptic number.
It is an amenable number.
30211132880 is an abundant number, since it is smaller than the sum of its proper divisors (40046627032).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30211132880 is a wasteful number, since it uses less digits than its factorization.
30211132880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 90743 (or 90737 counting only the distinct ones).
The product of its (nonzero) digits is 2304, while the sum is 29.
The spelling of 30211132880 in words is "thirty billion, two hundred eleven million, one hundred thirty-two thousand, eight hundred eighty".
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