Base | Representation |
---|---|
bin | 111010110101… |
… | …1001100111001 |
3 | 2011001020020011 |
4 | 1311223030321 |
5 | 30344112201 |
6 | 3021101521 |
7 | 523126165 |
oct | 165531471 |
9 | 64036204 |
10 | 30847801 |
11 | 1645a456 |
12 | a3b78a1 |
13 | 6510b4a |
14 | 414dca5 |
15 | 2a95151 |
hex | 1d6b339 |
30847801 has 2 divisors, whose sum is σ = 30847802. Its totient is φ = 30847800.
The previous prime is 30847799. The next prime is 30847819. The reversal of 30847801 is 10874803.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 29419776 + 1428025 = 5424^2 + 1195^2 .
It is a cyclic number.
It is not a de Polignac number, because 30847801 - 21 = 30847799 is a prime.
Together with 30847799, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (30847871) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15423900 + 15423901.
It is an arithmetic number, because the mean of its divisors is an integer number (15423901).
Almost surely, 230847801 is an apocalyptic number.
It is an amenable number.
30847801 is a deficient number, since it is larger than the sum of its proper divisors (1).
30847801 is an equidigital number, since it uses as much as digits as its factorization.
30847801 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 5376, while the sum is 31.
The square root of 30847801 is about 5554.0796717368. The cubic root of 30847801 is about 313.6231194397.
The spelling of 30847801 in words is "thirty million, eight hundred forty-seven thousand, eight hundred one".
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