Base | Representation |
---|---|
bin | 110001100101… |
… | …111000110101 |
3 | 220110110222120 |
4 | 301211320311 |
5 | 11312001440 |
6 | 1142350153 |
7 | 215333406 |
oct | 61457065 |
9 | 26413876 |
10 | 13000245 |
11 | 737a305 |
12 | 442b359 |
13 | 290236b |
14 | 1a259ad |
15 | 121bdd0 |
hex | c65e35 |
13000245 has 8 divisors (see below), whose sum is σ = 20800416. Its totient is φ = 6933456.
The previous prime is 13000243. The next prime is 13000249. The reversal of 13000245 is 54200031.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 13000245 - 21 = 13000243 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 866683 = 13000245 / (1 + 3 + 0 + 0 + 0 + 2 + 4 + 5).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13000243) 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, 433327 + ... + 433356.
It is an arithmetic number, because the mean of its divisors is an integer number (2600052).
Almost surely, 213000245 is an apocalyptic number.
13000245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13000245 is a deficient number, since it is larger than the sum of its proper divisors (7800171).
13000245 is an equidigital number, since it uses as much as digits as its factorization.
13000245 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 866691.
The product of its (nonzero) digits is 120, while the sum is 15.
The square root of 13000245 is about 3605.5852506909. The cubic root of 13000245 is about 235.1349458833.
Adding to 13000245 its reverse (54200031), we get a palindrome (67200276).
The spelling of 13000245 in words is "thirteen million, two hundred forty-five", and thus it is an aban number.
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