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12805353 = 3211129347
BaseRepresentation
bin110000110110…
…010011101001
3220002120122100
4300312103221
511234232403
61134244013
7213562251
oct60662351
926076570
1012805353
117256940
124356609
132864742
1419b4961
1511ce2a3
hexc364e9

12805353 has 12 divisors (see below), whose sum is σ = 20178288. Its totient is φ = 7760760.

The previous prime is 12805349. The next prime is 12805417. The reversal of 12805353 is 35350821.

12805353 is a `hidden beast` number, since 128 + 0 + 535 + 3 = 666.

12805353 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12805353 - 22 = 12805349 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12805313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64575 + ... + 64772.

It is an arithmetic number, because the mean of its divisors is an integer number (1681524).

Almost surely, 212805353 is an apocalyptic number.

It is an amenable number.

12805353 is a deficient number, since it is larger than the sum of its proper divisors (7372935).

12805353 is a wasteful number, since it uses less digits than its factorization.

12805353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129364 (or 129361 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 12805353 is about 3578.4567902938. The cubic root of 12805353 is about 233.9540234019.

The spelling of 12805353 in words is "twelve million, eight hundred five thousand, three hundred fifty-three".

Divisors: 1 3 9 11 33 99 129347 388041 1164123 1422817 4268451 12805353