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13005163 = 103912517
BaseRepresentation
bin110001100111…
…000101101011
3220110201201201
4301213011223
511312131123
61142425031
7215353633
oct61470553
926421651
1013005163
117382a76
124432177
132904682
141a276c3
15121d5ad
hexc6716b

13005163 has 4 divisors (see below), whose sum is σ = 13018720. Its totient is φ = 12991608.

The previous prime is 13005133. The next prime is 13005173. The reversal of 13005163 is 36150031.

13005163 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13005163 - 25 = 13005131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13005163.

It is not an unprimeable number, because it can be changed into a prime (13005103) 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 3 ways as a sum of consecutive naturals, for example, 5220 + ... + 7297.

It is an arithmetic number, because the mean of its divisors is an integer number (3254680).

Almost surely, 213005163 is an apocalyptic number.

13005163 is a deficient number, since it is larger than the sum of its proper divisors (13557).

13005163 is a wasteful number, since it uses less digits than its factorization.

13005163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13556.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 13005163 is about 3606.2671836679. The cubic root of 13005163 is about 235.1645927059.

Adding to 13005163 its reverse (36150031), we get a palindrome (49155194).

The spelling of 13005163 in words is "thirteen million, five thousand, one hundred sixty-three".

Divisors: 1 1039 12517 13005163