Base | Representation |
---|---|
bin | 11011111110011111… |
… | …001001100010101111 |
3 | 2212112111101201120210 |
4 | 123332133021202233 |
5 | 443010040212231 |
6 | 21444440113503 |
7 | 2112255351510 |
oct | 337637114257 |
9 | 85474351523 |
10 | 30039382191 |
11 | 118154a24a5 |
12 | 59a4165893 |
13 | 2aa95a3680 |
14 | 164d77aa07 |
15 | bac307a46 |
hex | 6fe7c98af |
30039382191 has 32 divisors (see below), whose sum is σ = 49671756288. Its totient is φ = 15723976320.
The previous prime is 30039382187. The next prime is 30039382193. The reversal of 30039382191 is 19128393003.
It is not a de Polignac number, because 30039382191 - 22 = 30039382187 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (39).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30039382193) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384216 + ... + 455741.
It is an arithmetic number, because the mean of its divisors is an integer number (1552242384).
Almost surely, 230039382191 is an apocalyptic number.
30039382191 is a deficient number, since it is larger than the sum of its proper divisors (19632374097).
30039382191 is a wasteful number, since it uses less digits than its factorization.
30039382191 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 840111.
The product of its (nonzero) digits is 34992, while the sum is 39.
The spelling of 30039382191 in words is "thirty billion, thirty-nine million, three hundred eighty-two thousand, one hundred ninety-one".
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