Base | Representation |
---|---|
bin | 11010000000001… |
… | …10100111111101 |
3 | 120012110012101202 |
4 | 31000012213331 |
5 | 421320142231 |
6 | 33351145245 |
7 | 5256040160 |
oct | 1500064775 |
9 | 505405352 |
10 | 218130941 |
11 | 102147006 |
12 | 61075225 |
13 | 36264a82 |
14 | 20d81ad7 |
15 | 1423b5cb |
hex | d0069fd |
218130941 has 8 divisors (see below), whose sum is σ = 249385920. Its totient is φ = 186899328.
The previous prime is 218130931. The next prime is 218130943. The reversal of 218130941 is 149031812.
218130941 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 218130941 - 26 = 218130877 is a prime.
It is a super-2 number, since 2×2181309412 = 95162214843090962, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (218130943) 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, 25130 + ... + 32676.
It is an arithmetic number, because the mean of its divisors is an integer number (31173240).
Almost surely, 2218130941 is an apocalyptic number.
It is an amenable number.
218130941 is a deficient number, since it is larger than the sum of its proper divisors (31254979).
218130941 is an equidigital number, since it uses as much as digits as its factorization.
218130941 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11683.
The product of its (nonzero) digits is 1728, while the sum is 29.
The square root of 218130941 is about 14769.2566163636. The cubic root of 218130941 is about 601.9666403518.
The spelling of 218130941 in words is "two hundred eighteen million, one hundred thirty thousand, nine hundred forty-one".
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