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13107849 = 34369283
BaseRepresentation
bin110010000000…
…001010001001
3220122221120220
4302000022021
511323422344
61144540253
7216262206
oct62001211
926587526
1013107849
117443137
124481689
13293c331
141a52cad
15123dc19
hexc80289

13107849 has 4 divisors (see below), whose sum is σ = 17477136. Its totient is φ = 8738564.

The previous prime is 13107847. The next prime is 13107893. The reversal of 13107849 is 94870131.

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: 94870131 = 331623377.

It is a cyclic number.

It is not a de Polignac number, because 13107849 - 21 = 13107847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13107847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2184639 + ... + 2184644.

It is an arithmetic number, because the mean of its divisors is an integer number (4369284).

Almost surely, 213107849 is an apocalyptic number.

It is an amenable number.

13107849 is a deficient number, since it is larger than the sum of its proper divisors (4369287).

13107849 is an equidigital number, since it uses as much as digits as its factorization.

13107849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4369286.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 13107849 is about 3620.4763498744. The cubic root of 13107849 is about 235.7819073469.

The spelling of 13107849 in words is "thirteen million, one hundred seven thousand, eight hundred forty-nine".

Divisors: 1 3 4369283 13107849