Base | Representation |
---|---|
bin | 10111000110111… |
… | …000011111010000 |
3 | 1000000111012021020 |
4 | 113012320133100 |
5 | 1243221231313 |
6 | 102245155440 |
7 | 12415140666 |
oct | 2706703720 |
9 | 1000435236 |
10 | 387680208 |
11 | 189920973 |
12 | a99bbb80 |
13 | 62419b96 |
14 | 396b8c36 |
15 | 2407d323 |
hex | 171b87d0 |
387680208 has 40 divisors (see below), whose sum is σ = 1003560768. Its totient is φ = 128961792.
The previous prime is 387680201. The next prime is 387680219. The reversal of 387680208 is 802086783.
It is a self number, because there is not a number n which added to its sum of digits gives 387680208.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (387680201) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16116 + ... + 32172.
Almost surely, 2387680208 is an apocalyptic number.
It is an amenable number.
387680208 is an abundant number, since it is smaller than the sum of its proper divisors (615880560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
387680208 is a wasteful number, since it uses less digits than its factorization.
387680208 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16571 (or 16565 counting only the distinct ones).
The product of its (nonzero) digits is 129024, while the sum is 42.
The square root of 387680208 is about 19689.5964407603. The cubic root of 387680208 is about 729.1628659844.
The spelling of 387680208 in words is "three hundred eighty-seven million, six hundred eighty thousand, two hundred eight".
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