Search a number
-
+
12630855786 = 234222749853
BaseRepresentation
bin10111100001101101…
…11001000001101010
31012121021011221210120
423300312321001222
5201331444341121
65445203024110
7625001334303
oct136066710152
935537157716
1012630855786
1153a187499a
12254606b036
131263a74a83
1487b7177aa
154ddd35bc6
hex2f0db906a

12630855786 has 16 divisors (see below), whose sum is σ = 25262816544. Its totient is φ = 4210101104.

The previous prime is 12630855781. The next prime is 12630855803. The reversal of 12630855786 is 68755803621.

It is a happy number.

12630855786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12630855781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228436 + ... + 278288.

It is an arithmetic number, because the mean of its divisors is an integer number (1578926034).

Almost surely, 212630855786 is an apocalyptic number.

12630855786 is an abundant number, since it is smaller than the sum of its proper divisors (12631960758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12630855786 is a wasteful number, since it uses less digits than its factorization.

12630855786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92085.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 12630855786 in words is "twelve billion, six hundred thirty million, eight hundred fifty-five thousand, seven hundred eighty-six".

Divisors: 1 2 3 6 42227 49853 84454 99706 126681 149559 253362 299118 2105142631 4210285262 6315427893 12630855786