Base | Representation |
---|---|
bin | 111010110111… |
… | …0001110000001 |
3 | 2011001212011221 |
4 | 1311232032001 |
5 | 30400011121 |
6 | 3021235041 |
7 | 523210213 |
oct | 165561601 |
9 | 64055157 |
10 | 30860161 |
11 | 16468772 |
12 | a402a81 |
13 | 6516667 |
14 | 41545b3 |
15 | 2a98b41 |
hex | 1d6e381 |
30860161 has 8 divisors (see below), whose sum is σ = 32558400. Its totient is φ = 29169360.
The previous prime is 30860149. The next prime is 30860171. The reversal of 30860161 is 16106803.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30860161 - 25 = 30860129 is a prime.
It is not an unprimeable number, because it can be changed into a prime (30860131) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8076 + ... + 11266.
It is an arithmetic number, because the mean of its divisors is an integer number (4069800).
Almost surely, 230860161 is an apocalyptic number.
It is an amenable number.
30860161 is a deficient number, since it is larger than the sum of its proper divisors (1698239).
30860161 is a wasteful number, since it uses less digits than its factorization.
30860161 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3719.
The product of its (nonzero) digits is 864, while the sum is 25.
The square root of 30860161 is about 5555.1922558990. The cubic root of 30860161 is about 313.6650010220.
Adding to 30860161 its reverse (16106803), we get a palindrome (46966964).
The spelling of 30860161 in words is "thirty million, eight hundred sixty thousand, one hundred sixty-one".
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