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13144849 = 64320443
BaseRepresentation
bin110010001001…
…001100010001
3220201211100021
4302021030101
511331113344
61145423441
7216505114
oct62111421
926654307
1013144849
117468a13
12449ab81
132953123
141a6257b
151249b84
hexc89311

13144849 has 4 divisors (see below), whose sum is σ = 13165936. Its totient is φ = 13123764.

The previous prime is 13144841. The next prime is 13144853. The reversal of 13144849 is 94844131.

13144849 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94844131 = 131724001.

It is a cyclic number.

It is not a de Polignac number, because 13144849 - 23 = 13144841 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (13144841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9579 + ... + 10864.

It is an arithmetic number, because the mean of its divisors is an integer number (3291484).

Almost surely, 213144849 is an apocalyptic number.

It is an amenable number.

13144849 is a deficient number, since it is larger than the sum of its proper divisors (21087).

13144849 is an equidigital number, since it uses as much as digits as its factorization.

13144849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21086.

The product of its digits is 13824, while the sum is 34.

The square root of 13144849 is about 3625.5825738769. The cubic root of 13144849 is about 236.0035489747.

The spelling of 13144849 in words is "thirteen million, one hundred forty-four thousand, eight hundred forty-nine".

Divisors: 1 643 20443 13144849