Base | Representation |
---|---|
bin | 110001100001… |
… | …001001100101 |
3 | 220102111100202 |
4 | 301201021211 |
5 | 11310341322 |
6 | 1142120245 |
7 | 215223002 |
oct | 61411145 |
9 | 26374322 |
10 | 12980837 |
11 | 7366771 |
12 | 4420085 |
13 | 28c658c |
14 | 1a1c8a9 |
15 | 1216292 |
hex | c61265 |
12980837 has 2 divisors, whose sum is σ = 12980838. Its totient is φ = 12980836.
The previous prime is 12980783. The next prime is 12980873. The reversal of 12980837 is 73808921.
12980837 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
Together with next prime (12980873) it forms an Ormiston pair, because they use the same digits, order apart.
Together with previous prime (12980783) it forms an Ormiston pair, because they use the same digits, order apart.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 11621281 + 1359556 = 3409^2 + 1166^2 .
It is a cyclic number.
It is not a de Polignac number, because 12980837 - 28 = 12980581 is a prime.
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 12980837.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12980137) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6490418 + 6490419.
It is an arithmetic number, because the mean of its divisors is an integer number (6490419).
Almost surely, 212980837 is an apocalyptic number.
It is an amenable number.
12980837 is a deficient number, since it is larger than the sum of its proper divisors (1).
12980837 is an equidigital number, since it uses as much as digits as its factorization.
12980837 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 24192, while the sum is 38.
The square root of 12980837 is about 3602.8928654624. The cubic root of 12980837 is about 235.0178770164.
The spelling of 12980837 in words is "twelve million, nine hundred eighty thousand, eight hundred thirty-seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •