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13018013 = 29479551
BaseRepresentation
bin110001101010…
…001110011101
3220111101100122
4301222032131
511313034023
61143004325
7215436251
oct61521635
926441318
1013018013
117391698
1244396a5
13290a488
141a2c261
1512222c8
hexc6a39d

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".

Divisors: 1 29 47 1363 9551 276979 448897 13018013