Base | Representation |
---|---|
bin | 11001101000010… |
… | …10010010101111 |
3 | 112222120010212211 |
4 | 30310022102233 |
5 | 420020001424 |
6 | 33200111251 |
7 | 5220320566 |
oct | 1464122257 |
9 | 488503784 |
10 | 215000239 |
11 | 1003a8953 |
12 | 60005527 |
13 | 35709a9c |
14 | 207a8bdd |
15 | 13d1db94 |
hex | cd0a4af |
215000239 has 2 divisors, whose sum is σ = 215000240. Its totient is φ = 215000238.
The previous prime is 215000183. The next prime is 215000249. The reversal of 215000239 is 932000512.
215000239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 215000239 - 211 = 214998191 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (215000249) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107500119 + 107500120.
It is an arithmetic number, because the mean of its divisors is an integer number (107500120).
Almost surely, 2215000239 is an apocalyptic number.
215000239 is a deficient number, since it is larger than the sum of its proper divisors (1).
215000239 is an equidigital number, since it uses as much as digits as its factorization.
215000239 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 540, while the sum is 22.
The square root of 215000239 is about 14662.8864484453. The cubic root of 215000239 is about 599.0728634714.
The spelling of 215000239 in words is "two hundred fifteen million, two hundred thirty-nine", and thus it is an aban number.
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