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12736071 = 3231191239
BaseRepresentation
bin110000100101…
…011001000111
3212222001121100
4300211121013
511230023241
61132551143
7213153255
oct60453107
925861540
1012736071
117209887
1243224b3
13283c04a
1419975d5
1511b89b6
hexc25647

12736071 has 24 divisors (see below), whose sum is σ = 19169280. Its totient is φ = 8139600.

The previous prime is 12736069. The next prime is 12736079. The reversal of 12736071 is 17063721.

It is not a de Polignac number, because 12736071 - 21 = 12736069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12736079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53170 + ... + 53408.

It is an arithmetic number, because the mean of its divisors is an integer number (798720).

Almost surely, 212736071 is an apocalyptic number.

12736071 is a deficient number, since it is larger than the sum of its proper divisors (6433209).

12736071 is a wasteful number, since it uses less digits than its factorization.

12736071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 12736071 is about 3568.7632311489. The cubic root of 12736071 is about 233.5313323904.

Adding to 12736071 its reverse (17063721), we get a palindrome (29799792).

The spelling of 12736071 in words is "twelve million, seven hundred thirty-six thousand, seventy-one".

Divisors: 1 3 9 31 93 191 239 279 573 717 1719 2151 5921 7409 17763 22227 45649 53289 66681 136947 410841 1415119 4245357 12736071