Base | Representation |
---|---|
bin | 101111001111… |
… | …111111000101 |
3 | 212022021201211 |
4 | 233033333011 |
5 | 11132324440 |
6 | 1121251421 |
7 | 210165334 |
oct | 57177705 |
9 | 25267654 |
10 | 12386245 |
11 | 6a9aa73 |
12 | 4193b71 |
13 | 2748a51 |
14 | 1905d1b |
15 | 1149eea |
hex | bcffc5 |
12386245 has 4 divisors (see below), whose sum is σ = 14863500. Its totient is φ = 9908992.
The previous prime is 12386191. The next prime is 12386249. The reversal of 12386245 is 54268321.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54268321 = 31 ⋅1750591.
It can be written as a sum of positive squares in 2 ways, for example, as 1640961 + 10745284 = 1281^2 + 3278^2 .
It is a cyclic number.
It is not a de Polignac number, because 12386245 - 27 = 12386117 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12386249) 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 3 ways as a sum of consecutive naturals, for example, 1238620 + ... + 1238629.
It is an arithmetic number, because the mean of its divisors is an integer number (3715875).
Almost surely, 212386245 is an apocalyptic number.
It is an amenable number.
12386245 is a deficient number, since it is larger than the sum of its proper divisors (2477255).
12386245 is an equidigital number, since it uses as much as digits as its factorization.
12386245 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2477254.
The product of its digits is 11520, while the sum is 31.
The square root of 12386245 is about 3519.4097516487. The cubic root of 12386245 is about 231.3732899909.
It can be divided in two parts, 123 and 86245, that added together give a palindrome (86368).
The spelling of 12386245 in words is "twelve million, three hundred eighty-six thousand, two hundred forty-five".
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