Base | Representation |
---|---|
bin | 1111010011011… |
… | …00100110111010 |
3 | 22221112221002022 |
4 | 13221230212322 |
5 | 230330334010 |
6 | 20423234442 |
7 | 3116064566 |
oct | 751544672 |
9 | 287487068 |
10 | 128371130 |
11 | 6650a148 |
12 | 36ba8a22 |
13 | 20798264 |
14 | 130986a6 |
15 | b40ad55 |
hex | 7a6c9ba |
128371130 has 24 divisors (see below), whose sum is σ = 237507228. Its totient is φ = 49955328.
The previous prime is 128371127. The next prime is 128371151. The reversal of 128371130 is 31173821.
It can be written as a sum of positive squares in 6 ways, for example, as 84400969 + 43970161 = 9187^2 + 6631^2 .
It is a self number, because there is not a number n which added to its sum of digits gives 128371130.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9002 + ... + 18378.
Almost surely, 2128371130 is an apocalyptic number.
128371130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
128371130 is a deficient number, since it is larger than the sum of its proper divisors (109136098).
128371130 is an equidigital number, since it uses as much as digits as its factorization.
128371130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9458 (or 9421 counting only the distinct ones).
The product of its (nonzero) digits is 1008, while the sum is 26.
The square root of 128371130 is about 11330.0984108700. The cubic root of 128371130 is about 504.4550275653.
The spelling of 128371130 in words is "one hundred twenty-eight million, three hundred seventy-one thousand, one hundred thirty".
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