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12868243 = 89191757
BaseRepresentation
bin110001000101…
…101010010011
3220012202220121
4301011222103
511243240433
61135451111
7214243513
oct61055223
926182817
1012868243
11729a113
124386a97
13288725b
1419cd843
1511e2c2d
hexc45a93

12868243 has 8 divisors (see below), whose sum is σ = 13098240. Its totient is φ = 12640320.

The previous prime is 12868217. The next prime is 12868283. The reversal of 12868243 is 34286821.

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

It is a cyclic number.

It is not a de Polignac number, because 12868243 - 25 = 12868211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12868199 and 12868208.

It is not an unprimeable number, because it can be changed into a prime (12868283) 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 7 ways as a sum of consecutive naturals, for example, 16621 + ... + 17377.

It is an arithmetic number, because the mean of its divisors is an integer number (1637280).

Almost surely, 212868243 is an apocalyptic number.

12868243 is a deficient number, since it is larger than the sum of its proper divisors (229997).

12868243 is an equidigital number, since it uses as much as digits as its factorization.

12868243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037.

The product of its digits is 18432, while the sum is 34.

The square root of 12868243 is about 3587.2333350369. The cubic root of 12868243 is about 234.3363985731.

The spelling of 12868243 in words is "twelve million, eight hundred sixty-eight thousand, two hundred forty-three".

Divisors: 1 89 191 757 16999 67373 144587 12868243