Base | Representation |
---|---|
bin | 110000110110… |
… | …001001111011 |
3 | 220002112210022 |
4 | 300312021323 |
5 | 11234222411 |
6 | 1134241055 |
7 | 213560402 |
oct | 60661173 |
9 | 26075708 |
10 | 12804731 |
11 | 7256425 |
12 | 435618b |
13 | 2864384 |
14 | 19b4639 |
15 | 11cdedb |
hex | c3627b |
12804731 has 2 divisors, whose sum is σ = 12804732. Its totient is φ = 12804730.
The previous prime is 12804719. The next prime is 12804733. The reversal of 12804731 is 13740821.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 12804731 - 26 = 12804667 is a prime.
It is a super-2 number, since 2×128047312 = 327922271964722, which contains 22 as substring.
Together with 12804733, it forms a pair of twin primes.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 12804731.
It is not a weakly prime, because it can be changed into another prime (12804733) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6402365 + 6402366.
It is an arithmetic number, because the mean of its divisors is an integer number (6402366).
Almost surely, 212804731 is an apocalyptic number.
12804731 is a deficient number, since it is larger than the sum of its proper divisors (1).
12804731 is an equidigital number, since it uses as much as digits as its factorization.
12804731 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1344, while the sum is 26.
The square root of 12804731 is about 3578.3698802667. The cubic root of 12804731 is about 233.9502353569.
The spelling of 12804731 in words is "twelve million, eight hundred four thousand, seven hundred thirty-one".
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