Base | Representation |
---|---|
bin | 111001011110… |
… | …0000001000010 |
3 | 2002200202220220 |
4 | 1302330001002 |
5 | 30203131432 |
6 | 2553443510 |
7 | 514050162 |
oct | 162740102 |
9 | 62622826 |
10 | 30130242 |
11 | 1600a32a |
12 | a110596 |
13 | 631c35c |
14 | 40045a2 |
15 | 29a272c |
hex | 1cbc042 |
30130242 has 16 divisors (see below), whose sum is σ = 60736512. Its totient is φ = 9964080.
The previous prime is 30130231. The next prime is 30130249. The reversal of 30130242 is 24203103.
It is not an unprimeable number, because it can be changed into a prime (30130249) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19009 + ... + 20532.
It is an arithmetic number, because the mean of its divisors is an integer number (3796032).
Almost surely, 230130242 is an apocalyptic number.
30130242 is an abundant number, since it is smaller than the sum of its proper divisors (30606270).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30130242 is a wasteful number, since it uses less digits than its factorization.
30130242 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 39673.
The product of its (nonzero) digits is 144, while the sum is 15.
The square root of 30130242 is about 5489.1021123677. The cubic root of 30130242 is about 311.1722594186.
Adding to 30130242 its reverse (24203103), we get a palindrome (54333345).
The spelling of 30130242 in words is "thirty million, one hundred thirty thousand, two hundred forty-two".
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