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12784108 = 2213922993
BaseRepresentation
bin110000110001…
…000111101100
3220001111111111
4300301013230
511233042413
61134001404
7213443311
oct60610754
926044444
1012784108
117241987
124346264
132857b7c
1419aad08
1511c7d3d
hexc311ec

12784108 has 12 divisors (see below), whose sum is σ = 22534120. Its totient is φ = 6345792.

The previous prime is 12784097. The next prime is 12784111. The reversal of 12784108 is 80148721.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 12784108.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10941 + ... + 12052.

Almost surely, 212784108 is an apocalyptic number.

It is an amenable number.

12784108 is a deficient number, since it is larger than the sum of its proper divisors (9750012).

12784108 is a wasteful number, since it uses less digits than its factorization.

12784108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23136 (or 23134 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 12784108 is about 3575.4870996831. The cubic root of 12784108 is about 233.8245696105.

The spelling of 12784108 in words is "twelve million, seven hundred eighty-four thousand, one hundred eight".

Divisors: 1 2 4 139 278 556 22993 45986 91972 3196027 6392054 12784108