Base | Representation |
---|---|
bin | 110000010101… |
… | …010100100101 |
3 | 212211201022100 |
4 | 300111110211 |
5 | 11220421440 |
6 | 1131322313 |
7 | 212460330 |
oct | 60252445 |
9 | 25751270 |
10 | 12670245 |
11 | 7174385 |
12 | 42b0399 |
13 | 28180b3 |
14 | 197b617 |
15 | 11a4230 |
hex | c15525 |
12670245 has 96 divisors (see below), whose sum is σ = 27705600. Its totient is φ = 5225472.
The previous prime is 12670223. The next prime is 12670247. The reversal of 12670245 is 54207621.
It is not a de Polignac number, because 12670245 - 217 = 12539173 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12670247) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 173529 + ... + 173601.
It is an arithmetic number, because the mean of its divisors is an integer number (288600).
Almost surely, 212670245 is an apocalyptic number.
12670245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
12670245 is an abundant number, since it is smaller than the sum of its proper divisors (15035355).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12670245 is a wasteful number, since it uses less digits than its factorization.
12670245 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 139 (or 136 counting only the distinct ones).
The product of its (nonzero) digits is 3360, while the sum is 27.
The square root of 12670245 is about 3559.5287609458. The cubic root of 12670245 is about 233.1283040211.
Adding to 12670245 its reverse (54207621), we get a palindrome (66877866).
The spelling of 12670245 in words is "twelve million, six hundred seventy thousand, two hundred forty-five".
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