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12887168 = 27719757
BaseRepresentation
bin110001001010…
…010010000000
3220020201212112
4301022102000
511244342133
61140114452
7214352630
oct61122200
926221775
1012887168
117302358
124395a28
132892a58
1419d66c0
1511e8648
hexc4a480

12887168 has 64 divisors (see below), whose sum is σ = 30926400. Its totient is φ = 5225472.

The previous prime is 12887167. The next prime is 12887177. The reversal of 12887168 is 86178821.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (12887167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16646 + ... + 17402.

It is an arithmetic number, because the mean of its divisors is an integer number (483225).

Almost surely, 212887168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12887168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15463200).

12887168 is an abundant number, since it is smaller than the sum of its proper divisors (18039232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12887168 is an equidigital number, since it uses as much as digits as its factorization.

12887168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 785 counting only the distinct ones).

The product of its digits is 43008, while the sum is 41.

The square root of 12887168 is about 3589.8701926393. The cubic root of 12887168 is about 234.4512198443.

The spelling of 12887168 in words is "twelve million, eight hundred eighty-seven thousand, one hundred sixty-eight".

Divisors: 1 2 4 7 8 14 16 19 28 32 38 56 64 76 112 128 133 152 224 266 304 448 532 608 757 896 1064 1216 1514 2128 2432 3028 4256 5299 6056 8512 10598 12112 14383 17024 21196 24224 28766 42392 48448 57532 84784 96896 100681 115064 169568 201362 230128 339136 402724 460256 678272 805448 920512 1610896 1841024 3221792 6443584 12887168