Base | Representation |
---|---|
bin | 111010100001… |
… | …1101101011001 |
3 | 2010202000100001 |
4 | 1311003231121 |
5 | 30323423131 |
6 | 3013413001 |
7 | 521553451 |
oct | 165035531 |
9 | 63660301 |
10 | 30686041 |
11 | 16359971 |
12 | a33a161 |
13 | 6485329 |
14 | 410ad61 |
15 | 2a62261 |
hex | 1d43b59 |
30686041 has 2 divisors, whose sum is σ = 30686042. Its totient is φ = 30686040.
The previous prime is 30686039. The next prime is 30686053. The reversal of 30686041 is 14068603.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 25210441 + 5475600 = 5021^2 + 2340^2 .
It is a cyclic number.
It is not a de Polignac number, because 30686041 - 21 = 30686039 is a prime.
It is a super-2 number, since 2×306860412 = 1883266224507362, which contains 22 as substring.
Together with 30686039, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (30686011) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15343020 + 15343021.
It is an arithmetic number, because the mean of its divisors is an integer number (15343021).
Almost surely, 230686041 is an apocalyptic number.
It is an amenable number.
30686041 is a deficient number, since it is larger than the sum of its proper divisors (1).
30686041 is an equidigital number, since it uses as much as digits as its factorization.
30686041 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3456, while the sum is 28.
The square root of 30686041 is about 5539.4982624783. The cubic root of 30686041 is about 313.0739651062.
The spelling of 30686041 in words is "thirty million, six hundred eighty-six thousand, forty-one".
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