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12808585 = 523127877
BaseRepresentation
bin110000110111…
…000110001001
3220002202002001
4300313012021
511234333320
61134311001
7213604546
oct60670611
926082061
1012808585
117259309
124358461
13286605a
1419b5bcd
1511d020a
hexc37189

12808585 has 16 divisors (see below), whose sum is σ = 16183296. Its totient is φ = 9713088.

The previous prime is 12808583. The next prime is 12808589. The reversal of 12808585 is 58580821.

12808585 = T2261 + T2262 + ... + T2265.

It is a cyclic number.

It is not a de Polignac number, because 12808585 - 21 = 12808583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12808583) 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 15 ways as a sum of consecutive naturals, for example, 14167 + ... + 15043.

It is an arithmetic number, because the mean of its divisors is an integer number (1011456).

Almost surely, 212808585 is an apocalyptic number.

It is an amenable number.

12808585 is a deficient number, since it is larger than the sum of its proper divisors (3374711).

12808585 is a wasteful number, since it uses less digits than its factorization.

12808585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032.

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 12808585 is about 3578.9083531155. The cubic root of 12808585 is about 233.9737046450.

The spelling of 12808585 in words is "twelve million, eight hundred eight thousand, five hundred eighty-five".

Divisors: 1 5 23 115 127 635 877 2921 4385 14605 20171 100855 111379 556895 2561717 12808585