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13004171 = 17972649
BaseRepresentation
bin110001100110…
…110110001011
3220110200100222
4301212312023
511312113141
61142420255
7215351015
oct61466613
926420328
1013004171
117382254
12443168b
13290409b
141a271b5
15121d14b
hexc66d8b

13004171 has 4 divisors (see below), whose sum is σ = 13077000. Its totient is φ = 12931344.

The previous prime is 13004161. The next prime is 13004197. The reversal of 13004171 is 17140031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17140031 = 59290509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13004171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13004161) 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, 36146 + ... + 36503.

It is an arithmetic number, because the mean of its divisors is an integer number (3269250).

Almost surely, 213004171 is an apocalyptic number.

13004171 is a deficient number, since it is larger than the sum of its proper divisors (72829).

13004171 is an equidigital number, since it uses as much as digits as its factorization.

13004171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72828.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 13004171 is about 3606.1296427056. The cubic root of 13004171 is about 235.1586133061.

The spelling of 13004171 in words is "thirteen million, four thousand, one hundred seventy-one".

Divisors: 1 179 72649 13004171