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13004041 = 61213181
BaseRepresentation
bin110001100110…
…110100001001
3220110200012011
4301212310021
511312112131
61142415521
7215350441
oct61466411
926420164
1013004041
117382146
1244315a1
132903ccb
141a27121
15121d0b1
hexc66d09

13004041 has 4 divisors (see below), whose sum is σ = 13217284. Its totient is φ = 12790800.

The previous prime is 13003987. The next prime is 13004051. The reversal of 13004041 is 14040031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6270016 + 6734025 = 2504^2 + 2595^2 .

It is a cyclic number.

It is not a de Polignac number, because 13004041 - 211 = 13001993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13004051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106530 + ... + 106651.

It is an arithmetic number, because the mean of its divisors is an integer number (3304321).

Almost surely, 213004041 is an apocalyptic number.

It is an amenable number.

13004041 is a deficient number, since it is larger than the sum of its proper divisors (213243).

13004041 is an equidigital number, since it uses as much as digits as its factorization.

13004041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213242.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 13004041 is about 3606.1116177955. Note that the first 3 decimals coincide. The cubic root of 13004041 is about 235.1578296929.

Adding to 13004041 its reverse (14040031), we get a palindrome (27044072).

The spelling of 13004041 in words is "thirteen million, four thousand, forty-one".

Divisors: 1 61 213181 13004041