Base | Representation |
---|---|
bin | 11100001000100011… |
… | …110010100011011011 |
3 | 2212222021101020112010 |
4 | 130020203302203123 |
5 | 443331320332112 |
6 | 21513314121003 |
7 | 2116406626131 |
oct | 341043624333 |
9 | 85867336463 |
10 | 30208370907 |
11 | 118a19241a0 |
12 | 5a30880163 |
13 | 2b055c05b0 |
14 | 1667da9751 |
15 | bbc08863c |
hex | 7088f28db |
30208370907 has 32 divisors (see below), whose sum is σ = 47416110336. Its totient is φ = 16865251200.
The previous prime is 30208370897. The next prime is 30208370917. The reversal of 30208370907 is 70907380203.
It is an interprime number because it is at equal distance from previous prime (30208370897) and next prime (30208370917).
It is not a de Polignac number, because 30208370907 - 24 = 30208370891 is a prime.
It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Harshad number since it is a multiple of its sum of digits (39).
It is not an unprimeable number, because it can be changed into a prime (30208370917) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138933 + ... + 282345.
It is an arithmetic number, because the mean of its divisors is an integer number (1481753448).
Almost surely, 230208370907 is an apocalyptic number.
30208370907 is a deficient number, since it is larger than the sum of its proper divisors (17207739429).
30208370907 is a wasteful number, since it uses less digits than its factorization.
30208370907 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 143931.
The product of its (nonzero) digits is 63504, while the sum is 39.
The spelling of 30208370907 in words is "thirty billion, two hundred eight million, three hundred seventy thousand, nine hundred seven".
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