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13184969 = 72535077
BaseRepresentation
bin110010010010…
…111111001001
3220210212101012
4302102333021
511333404334
61150333305
7220033100
oct62227711
926725335
1013184969
117496076
1244ba235
132968475
141a73037
1512569ce
hexc92fc9

13184969 has 12 divisors (see below), whose sum is σ = 15630084. Its totient is φ = 11085984.

The previous prime is 13184939. The next prime is 13184989. The reversal of 13184969 is 96948131.

It can be written as a sum of positive squares in 2 ways, for example, as 11526025 + 1658944 = 3395^2 + 1288^2 .

It is not a de Polignac number, because 13184969 - 28 = 13184713 is a prime.

It is a super-2 number, since 2×131849692 = 347686815061922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13184909) 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 11 ways as a sum of consecutive naturals, for example, 59 + ... + 5135.

It is an arithmetic number, because the mean of its divisors is an integer number (1302507).

Almost surely, 213184969 is an apocalyptic number.

It is an amenable number.

13184969 is a deficient number, since it is larger than the sum of its proper divisors (2445115).

13184969 is an equidigital number, since it uses as much as digits as its factorization.

13184969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5144 (or 5137 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 13184969 is about 3631.1112624099. Note that the first 3 decimals coincide. The cubic root of 13184969 is about 236.2434108816.

The spelling of 13184969 in words is "thirteen million, one hundred eighty-four thousand, nine hundred sixty-nine".

Divisors: 1 7 49 53 371 2597 5077 35539 248773 269081 1883567 13184969