Base | Representation |
---|---|
bin | 101110001100… |
… | …000001011100 |
3 | 211210010212120 |
4 | 232030001130 |
5 | 11044422433 |
6 | 1111302540 |
7 | 204625623 |
oct | 56140134 |
9 | 24703776 |
10 | 12107868 |
11 | 691a903 |
12 | 407aa50 |
13 | 267c126 |
14 | 18726ba |
15 | 10e27b3 |
hex | b8c05c |
12107868 has 12 divisors (see below), whose sum is σ = 28251720. Its totient is φ = 4035952.
The previous prime is 12107863. The next prime is 12107869. The reversal of 12107868 is 86870121.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (12).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12107861) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504483 + ... + 504506.
It is an arithmetic number, because the mean of its divisors is an integer number (2354310).
Almost surely, 212107868 is an apocalyptic number.
It is an amenable number.
12107868 is an abundant number, since it is smaller than the sum of its proper divisors (16143852).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12107868 is a wasteful number, since it uses less digits than its factorization.
12107868 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1008996 (or 1008994 counting only the distinct ones).
The product of its (nonzero) digits is 5376, while the sum is 33.
The square root of 12107868 is about 3479.6361878794. The cubic root of 12107868 is about 229.6267923507.
Adding to 12107868 its reverse (86870121), we get a palindrome (98977989).
It can be divided in two parts, 12 and 107868, that added together give a triangular number (107880 = T464).
The spelling of 12107868 in words is "twelve million, one hundred seven thousand, eight hundred sixty-eight".
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