Base | Representation |
---|---|
bin | 110000010111… |
… | …110101111000 |
3 | 212212020110200 |
4 | 300113311320 |
5 | 11221234233 |
6 | 1131442200 |
7 | 212532405 |
oct | 60276570 |
9 | 25766420 |
10 | 12680568 |
11 | 718110a |
12 | 42b6360 |
13 | 281c9c4 |
14 | 19812ac |
15 | 11a7313 |
hex | c17d78 |
12680568 has 48 divisors (see below), whose sum is σ = 35001720. Its totient is φ = 4145856.
The previous prime is 12680561. The next prime is 12680573. The reversal of 12680568 is 86508621.
It is a happy number.
12680568 is a `hidden beast` number, since 12 + 6 + 80 + 568 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12680561) 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 in 11 ways as a sum of consecutive naturals, for example, 2155 + ... + 5477.
Almost surely, 212680568 is an apocalyptic number.
12680568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12680568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17500860).
12680568 is an abundant number, since it is smaller than the sum of its proper divisors (22321152).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12680568 is a wasteful number, since it uses less digits than its factorization.
12680568 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3388 (or 3381 counting only the distinct ones).
The product of its (nonzero) digits is 23040, while the sum is 36.
The square root of 12680568 is about 3560.9785172056. The cubic root of 12680568 is about 233.1916000925.
The spelling of 12680568 in words is "twelve million, six hundred eighty thousand, five hundred sixty-eight".
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