Base | Representation |
---|---|
bin | 111010101011… |
… | …0000111100001 |
3 | 2010212211202122 |
4 | 1311112013201 |
5 | 30333331231 |
6 | 3015154025 |
7 | 522316334 |
oct | 165260741 |
9 | 63784678 |
10 | 30761441 |
11 | 16400587 |
12 | a375915 |
13 | 64b0749 |
14 | 412a61b |
15 | 2a7977b |
hex | 1d561e1 |
30761441 has 2 divisors, whose sum is σ = 30761442. Its totient is φ = 30761440.
The previous prime is 30761429. The next prime is 30761443. The reversal of 30761441 is 14416703.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 26368225 + 4393216 = 5135^2 + 2096^2 .
It is a cyclic number.
It is not a de Polignac number, because 30761441 - 218 = 30499297 is a prime.
Together with 30761443, it forms a pair of twin primes.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 30761441.
It is not a weakly prime, because it can be changed into another prime (30761443) 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 as a sum of consecutive naturals, namely, 15380720 + 15380721.
It is an arithmetic number, because the mean of its divisors is an integer number (15380721).
Almost surely, 230761441 is an apocalyptic number.
It is an amenable number.
30761441 is a deficient number, since it is larger than the sum of its proper divisors (1).
30761441 is an equidigital number, since it uses as much as digits as its factorization.
30761441 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2016, while the sum is 26.
The square root of 30761441 is about 5546.2997574960. The cubic root of 30761441 is about 313.3301779019.
The spelling of 30761441 in words is "thirty million, seven hundred sixty-one thousand, four hundred forty-one".
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