Base | Representation |
---|---|
bin | 1010100010110100… |
… | …0100000100011111 |
3 | 21022020212110220100 |
4 | 2220231010010133 |
5 | 21244034313224 |
6 | 1144504552143 |
7 | 130065610410 |
oct | 25055040437 |
9 | 7266773810 |
10 | 2830385439 |
11 | 1222751522 |
12 | 66ba82653 |
13 | 3615087ab |
14 | 1cbc93807 |
15 | 11873cac9 |
hex | a8b4411f |
2830385439 has 24 divisors (see below), whose sum is σ = 4694548352. Its totient is φ = 1609690320.
The previous prime is 2830385423. The next prime is 2830385443. The reversal of 2830385439 is 9345830382.
It is not a de Polignac number, because 2830385439 - 24 = 2830385423 is a prime.
It is a super-2 number, since 2×28303854392 = 16022163466606445442, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 2830385394 and 2830385403.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2830385489) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93169 + ... + 119754.
Almost surely, 22830385439 is an apocalyptic number.
2830385439 is a deficient number, since it is larger than the sum of its proper divisors (1864162913).
2830385439 is a wasteful number, since it uses less digits than its factorization.
2830385439 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 213147 (or 213144 counting only the distinct ones).
The product of its (nonzero) digits is 622080, while the sum is 45.
The square root of 2830385439 is about 53201.3668903347. The cubic root of 2830385439 is about 1414.5398727846.
The spelling of 2830385439 in words is "two billion, eight hundred thirty million, three hundred eighty-five thousand, four hundred thirty-nine".
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