Base | Representation |
---|---|
bin | 110001001111… |
… | …110110111111 |
3 | 220021220012201 |
4 | 301033312333 |
5 | 11301110030 |
6 | 1140412331 |
7 | 214506346 |
oct | 61176677 |
9 | 26256181 |
10 | 12910015 |
11 | 7318538 |
12 | 43a70a7 |
13 | 28a0281 |
14 | 1a00b5d |
15 | 12002ca |
hex | c4fdbf |
12910015 has 8 divisors (see below), whose sum is σ = 16165728. Its totient is φ = 9878880.
The previous prime is 12910013. The next prime is 12910031. The reversal of 12910015 is 51001921.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 12910015 - 21 = 12910013 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 12909974 and 12910001.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12910013) 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 7 ways as a sum of consecutive naturals, for example, 56016 + ... + 56245.
It is an arithmetic number, because the mean of its divisors is an integer number (2020716).
Almost surely, 212910015 is an apocalyptic number.
12910015 is a deficient number, since it is larger than the sum of its proper divisors (3255713).
12910015 is a wasteful number, since it uses less digits than its factorization.
12910015 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 112289.
The product of its (nonzero) digits is 90, while the sum is 19.
The square root of 12910015 is about 3593.0509320075. The cubic root of 12910015 is about 234.5896869021.
Adding to 12910015 its reverse (51001921), we get a palindrome (63911936).
The spelling of 12910015 in words is "twelve million, nine hundred ten thousand, fifteen".
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