Base | Representation |
---|---|
bin | 111001111110… |
… | …1011010111101 |
3 | 2010012101102002 |
4 | 1303331122331 |
5 | 30240220031 |
6 | 3003312045 |
7 | 516244214 |
oct | 163753275 |
9 | 63171362 |
10 | 30398141 |
11 | 16182634 |
12 | a21b625 |
13 | 63b4287 |
14 | 407407b |
15 | 2a06ccb |
hex | 1cfd6bd |
30398141 has 2 divisors, whose sum is σ = 30398142. Its totient is φ = 30398140.
The previous prime is 30398129. The next prime is 30398161. The reversal of 30398141 is 14189303.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 19175641 + 11222500 = 4379^2 + 3350^2 .
It is an emirp because it is prime and its reverse (14189303) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30398141 - 210 = 30397117 is a prime.
It is a Sophie Germain prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30398161) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15199070 + 15199071.
It is an arithmetic number, because the mean of its divisors is an integer number (15199071).
Almost surely, 230398141 is an apocalyptic number.
It is an amenable number.
30398141 is a deficient number, since it is larger than the sum of its proper divisors (1).
30398141 is an equidigital number, since it uses as much as digits as its factorization.
30398141 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2592, while the sum is 29.
The square root of 30398141 is about 5513.4509157151. The cubic root of 30398141 is about 312.0917882744.
The spelling of 30398141 in words is "thirty million, three hundred ninety-eight thousand, one hundred forty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •