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12808886 = 222927967
BaseRepresentation
bin110000110111…
…001010110110
3220002202111012
4300313022312
511234341021
61134312222
7213605456
oct60671266
926082435
1012808886
117259562
124358672
13286622c
1419b5d66
1511d035b
hexc372b6

12808886 has 8 divisors (see below), whose sum is σ = 19297920. Its totient is φ = 6376248.

The previous prime is 12808853. The next prime is 12808891. The reversal of 12808886 is 68880821.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13526 + ... + 14441.

It is an arithmetic number, because the mean of its divisors is an integer number (2412240).

Almost surely, 212808886 is an apocalyptic number.

12808886 is a deficient number, since it is larger than the sum of its proper divisors (6489034).

12808886 is a wasteful number, since it uses less digits than its factorization.

12808886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28198.

The product of its (nonzero) digits is 49152, while the sum is 41.

The square root of 12808886 is about 3578.9504047975. The cubic root of 12808886 is about 233.9755374140.

The spelling of 12808886 in words is "twelve million, eight hundred eight thousand, eight hundred eighty-six".

Divisors: 1 2 229 458 27967 55934 6404443 12808886