Base | Representation |
---|---|
bin | 10110101100111… |
… | …001110110000100 |
3 | 222112200012110001 |
4 | 112230321312010 |
5 | 1240000320040 |
6 | 101443211044 |
7 | 12303225136 |
oct | 2654716604 |
9 | 875605401 |
10 | 380870020 |
11 | 185a9a313 |
12 | a7676a84 |
13 | 60ba419b |
14 | 38825056 |
15 | 2368559a |
hex | 16b39d84 |
380870020 has 12 divisors (see below), whose sum is σ = 799827084. Its totient is φ = 152348000.
The previous prime is 380870011. The next prime is 380870027. The reversal of 380870020 is 20078083.
It is a happy number.
380870020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 2 ways, for example, as 239878144 + 140991876 = 15488^2 + 11874^2 .
It is not an unprimeable number, because it can be changed into a prime (380870027) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9521731 + ... + 9521770.
It is an arithmetic number, because the mean of its divisors is an integer number (66652257).
Almost surely, 2380870020 is an apocalyptic number.
It is an amenable number.
380870020 is an abundant number, since it is smaller than the sum of its proper divisors (418957064).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
380870020 is a wasteful number, since it uses less digits than its factorization.
380870020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 19043510 (or 19043508 counting only the distinct ones).
The product of its (nonzero) digits is 2688, while the sum is 28.
The square root of 380870020 is about 19515.8914733609. The cubic root of 380870020 is about 724.8680029215.
The spelling of 380870020 in words is "three hundred eighty million, eight hundred seventy thousand, twenty".
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