Base | Representation |
---|---|
bin | 110001100111… |
… | …110100111001 |
3 | 220110212212122 |
4 | 301213310321 |
5 | 11312230220 |
6 | 1142451025 |
7 | 215365511 |
oct | 61476471 |
9 | 26425778 |
10 | 13008185 |
11 | 7385273 |
12 | 4433a75 |
13 | 2905b68 |
14 | 1a28841 |
15 | 121e425 |
hex | c67d39 |
13008185 has 8 divisors (see below), whose sum is σ = 15771336. Its totient is φ = 10298880.
The previous prime is 13008181. The next prime is 13008209. The reversal of 13008185 is 58180031.
It can be written as a sum of positive squares in 4 ways, for example, as 3041536 + 9966649 = 1744^2 + 3157^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 13008185 - 22 = 13008181 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (13008181) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12926 + ... + 13895.
It is an arithmetic number, because the mean of its divisors is an integer number (1971417).
Almost surely, 213008185 is an apocalyptic number.
It is an amenable number.
13008185 is a deficient number, since it is larger than the sum of its proper divisors (2763151).
13008185 is an equidigital number, since it uses as much as digits as its factorization.
13008185 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26923.
The product of its (nonzero) digits is 960, while the sum is 26.
The square root of 13008185 is about 3606.6861521347. The cubic root of 13008185 is about 235.1828063021.
The spelling of 13008185 in words is "thirteen million, eight thousand, one hundred eighty-five".
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