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13000245 = 35866683
BaseRepresentation
bin110001100101…
…111000110101
3220110110222120
4301211320311
511312001440
61142350153
7215333406
oct61457065
926413876
1013000245
11737a305
12442b359
13290236b
141a259ad
15121bdd0
hexc65e35

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.

Divisors: 1 3 5 15 866683 2600049 4333415 13000245