Base | Representation |
---|---|
bin | 111010011100… |
… | …1010000101001 |
3 | 2010122211121212 |
4 | 1310321100221 |
5 | 30321040431 |
6 | 3012442505 |
7 | 521314616 |
oct | 164712051 |
9 | 63584555 |
10 | 30643241 |
11 | 1632a7a2 |
12 | a319435 |
13 | 646b9c5 |
14 | 40d950d |
15 | 2a5472b |
hex | 1d39429 |
30643241 has 2 divisors, whose sum is σ = 30643242. Its totient is φ = 30643240.
The previous prime is 30643213. The next prime is 30643259. The reversal of 30643241 is 14234603.
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., 28847641 + 1795600 = 5371^2 + 1340^2 .
It is a cyclic number.
It is not a de Polignac number, because 30643241 - 214 = 30626857 is a prime.
It is not a weakly prime, because it can be changed into another prime (30643271) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15321620 + 15321621.
It is an arithmetic number, because the mean of its divisors is an integer number (15321621).
Almost surely, 230643241 is an apocalyptic number.
It is an amenable number.
30643241 is a deficient number, since it is larger than the sum of its proper divisors (1).
30643241 is an equidigital number, since it uses as much as digits as its factorization.
30643241 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1728, while the sum is 23.
The square root of 30643241 is about 5535.6337487229. The cubic root of 30643241 is about 312.9283418861.
Adding to 30643241 its reverse (14234603), we get a palindrome (44877844).
The spelling of 30643241 in words is "thirty million, six hundred forty-three thousand, two hundred forty-one".
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