Base | Representation |
---|---|
bin | 111001111110… |
… | …0001010001001 |
3 | 2010012010022112 |
4 | 1303330022021 |
5 | 30240033334 |
6 | 3003232105 |
7 | 516223145 |
oct | 163741211 |
9 | 63163275 |
10 | 30392969 |
11 | 16179762 |
12 | a218635 |
13 | 63b1b09 |
14 | 4072225 |
15 | 2a054ce |
hex | 1cfc289 |
30392969 has 2 divisors, whose sum is σ = 30392970. Its totient is φ = 30392968.
The previous prime is 30392953. The next prime is 30392983. The reversal of 30392969 is 96929303.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 28217344 + 2175625 = 5312^2 + 1475^2 .
It is a cyclic number.
It is not a de Polignac number, because 30392969 - 24 = 30392953 is a prime.
It is a super-2 number, since 2×303929692 = 1847465129269922, which contains 22 as substring.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is not a weakly prime, because it can be changed into another prime (30392909) 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, 15196484 + 15196485.
It is an arithmetic number, because the mean of its divisors is an integer number (15196485).
Almost surely, 230392969 is an apocalyptic number.
It is an amenable number.
30392969 is a deficient number, since it is larger than the sum of its proper divisors (1).
30392969 is an equidigital number, since it uses as much as digits as its factorization.
30392969 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 78732, while the sum is 41.
The square root of 30392969 is about 5512.9818610258. The cubic root of 30392969 is about 312.0740872985.
The spelling of 30392969 in words is "thirty million, three hundred ninety-two thousand, nine hundred sixty-nine".
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