Base | Representation |
---|---|
bin | 110001101010… |
… | …001110011101 |
3 | 220111101100122 |
4 | 301222032131 |
5 | 11313034023 |
6 | 1143004325 |
7 | 215436251 |
oct | 61521635 |
9 | 26441318 |
10 | 13018013 |
11 | 7391698 |
12 | 44396a5 |
13 | 290a488 |
14 | 1a2c261 |
15 | 12222c8 |
hex | c6a39d |
13018013 has 8 divisors (see below), whose sum is σ = 13754880. Its totient is φ = 12300400.
The previous prime is 13018009. The next prime is 13018037. The reversal of 13018013 is 31081031.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 13018013 - 22 = 13018009 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 13017982 and 13018000.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13018003) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3413 + ... + 6138.
It is an arithmetic number, because the mean of its divisors is an integer number (1719360).
Almost surely, 213018013 is an apocalyptic number.
It is an amenable number.
13018013 is a deficient number, since it is larger than the sum of its proper divisors (736867).
13018013 is an equidigital number, since it uses as much as digits as its factorization.
13018013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9627.
The product of its (nonzero) digits is 72, while the sum is 17.
The square root of 13018013 is about 3608.0483644209. The cubic root of 13018013 is about 235.2420201679.
Adding to 13018013 its reverse (31081031), we get a palindrome (44099044).
The spelling of 13018013 in words is "thirteen million, eighteen thousand, thirteen".
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