Base | Representation |
---|---|
bin | 101110000100… |
… | …110001010001 |
3 | 211201122010022 |
4 | 232010301101 |
5 | 11043000121 |
6 | 1110513225 |
7 | 204443204 |
oct | 56046121 |
9 | 24648108 |
10 | 12078161 |
11 | 68aa557 |
12 | 4065815 |
13 | 266b754 |
14 | 186593b |
15 | 10d8aab |
hex | b84c51 |
12078161 has 2 divisors, whose sum is σ = 12078162. Its totient is φ = 12078160.
The previous prime is 12078139. The next prime is 12078173. The reversal of 12078161 is 16187021.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 9339136 + 2739025 = 3056^2 + 1655^2 .
It is a cyclic number.
It is not a de Polignac number, because 12078161 - 26 = 12078097 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 12078161.
It is not a weakly prime, because it can be changed into another prime (12077161) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6039080 + 6039081.
It is an arithmetic number, because the mean of its divisors is an integer number (6039081).
Almost surely, 212078161 is an apocalyptic number.
It is an amenable number.
12078161 is a deficient number, since it is larger than the sum of its proper divisors (1).
12078161 is an equidigital number, since it uses as much as digits as its factorization.
12078161 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 672, while the sum is 26.
The square root of 12078161 is about 3475.3648729306. The cubic root of 12078161 is about 229.4388399198.
The spelling of 12078161 in words is "twelve million, seventy-eight thousand, one hundred sixty-one".
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