Base | Representation |
---|---|
bin | 111001011110… |
… | …0000000110001 |
3 | 2002200202220021 |
4 | 1302330000301 |
5 | 30203131400 |
6 | 2553443441 |
7 | 514050136 |
oct | 162740061 |
9 | 62622807 |
10 | 30130225 |
11 | 1600a314 |
12 | a110581 |
13 | 631c348 |
14 | 400458d |
15 | 29a271a |
hex | 1cbc031 |
30130225 has 12 divisors (see below), whose sum is σ = 37503180. Its totient is φ = 24012800.
The previous prime is 30130213. The next prime is 30130231. The reversal of 30130225 is 52203103.
It can be written as a sum of positive squares in 6 ways, for example, as 1411344 + 28718881 = 1188^2 + 5359^2 .
It is not a de Polignac number, because 30130225 - 25 = 30130193 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 30130199 and 30130208.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4881 + ... + 9169.
It is an arithmetic number, because the mean of its divisors is an integer number (3125265).
Almost surely, 230130225 is an apocalyptic number.
It is an amenable number.
30130225 is a deficient number, since it is larger than the sum of its proper divisors (7372955).
30130225 is a wasteful number, since it uses less digits than its factorization.
30130225 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4580 (or 4575 counting only the distinct ones).
The product of its (nonzero) digits is 180, while the sum is 16.
The square root of 30130225 is about 5489.1005638447. The cubic root of 30130225 is about 311.1722008957.
Adding to 30130225 its reverse (52203103), we get a palindrome (82333328).
The spelling of 30130225 in words is "thirty million, one hundred thirty thousand, two hundred twenty-five".
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