Base | Representation |
---|---|
bin | 110001100001… |
… | …101100101001 |
3 | 220102121102212 |
4 | 301201230221 |
5 | 11310424311 |
6 | 1142134505 |
7 | 215232356 |
oct | 61415451 |
9 | 26377385 |
10 | 12983081 |
11 | 7368421 |
12 | 4421435 |
13 | 28c75c7 |
14 | 1a1d62d |
15 | 1216c8b |
hex | c61b29 |
12983081 has 4 divisors (see below), whose sum is σ = 13060992. Its totient is φ = 12905172.
The previous prime is 12983071. The next prime is 12983093. The reversal of 12983081 is 18038921.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 12983081 - 222 = 8788777 is a prime.
It is a super-2 number, since 2×129830812 = 337120784505122, which contains 22 as substring.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (12983051) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38705 + ... + 39038.
It is an arithmetic number, because the mean of its divisors is an integer number (3265248).
Almost surely, 212983081 is an apocalyptic number.
It is an amenable number.
12983081 is a deficient number, since it is larger than the sum of its proper divisors (77911).
12983081 is an equidigital number, since it uses as much as digits as its factorization.
12983081 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 77910.
The product of its (nonzero) digits is 3456, while the sum is 32.
The square root of 12983081 is about 3603.2042684255. The cubic root of 12983081 is about 235.0314187659.
The spelling of 12983081 in words is "twelve million, nine hundred eighty-three thousand, eighty-one".
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