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13827005 = 53897109
BaseRepresentation
bin110100101111…
…101110111101
3222000111002022
4310233232331
512014431010
61212205525
7225345653
oct64575675
928014068
1013827005
117894485
1247698a5
132b3177a
141b9cdd3
151331d55
hexd2fbbd

13827005 has 8 divisors (see below), whose sum is σ = 16637400. Its totient is φ = 11031616.

The previous prime is 13826993. The next prime is 13827007. The reversal of 13827005 is 50072831.

It can be written as a sum of positive squares in 4 ways, for example, as 3481 + 13823524 = 59^2 + 3718^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13827005 - 26 = 13826941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13827007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1610 + ... + 5499.

It is an arithmetic number, because the mean of its divisors is an integer number (2079675).

Almost surely, 213827005 is an apocalyptic number.

It is an amenable number.

13827005 is a deficient number, since it is larger than the sum of its proper divisors (2810395).

13827005 is an equidigital number, since it uses as much as digits as its factorization.

13827005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7503.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 13827005 is about 3718.4680985589. The cubic root of 13827005 is about 240.0173887864.

Adding to 13827005 its reverse (50072831), we get a palindrome (63899836).

The spelling of 13827005 in words is "thirteen million, eight hundred twenty-seven thousand, five".

Divisors: 1 5 389 1945 7109 35545 2765401 13827005