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12868893 = 329714741
BaseRepresentation
bin110001000101…
…110100011101
3220012210210200
4301011310131
511243301033
61135454113
7214245432
oct61056435
926183720
1012868893
11729a654
124387339
13288763b
1419cdb89
1511e3013
hexc45d1d

12868893 has 12 divisors (see below), whose sum is σ = 18781308. Its totient is φ = 8490240.

The previous prime is 12868883. The next prime is 12868897. The reversal of 12868893 is 39886821.

12868893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9903609 + 2965284 = 3147^2 + 1722^2 .

It is not a de Polignac number, because 12868893 - 25 = 12868861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12868897) 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, 6498 + ... + 8243.

It is an arithmetic number, because the mean of its divisors is an integer number (1565109).

Almost surely, 212868893 is an apocalyptic number.

It is an amenable number.

12868893 is a deficient number, since it is larger than the sum of its proper divisors (5912415).

12868893 is a wasteful number, since it uses less digits than its factorization.

12868893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14844 (or 14841 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 12868893 is about 3587.3239329617. The cubic root of 12868893 is about 234.3403441025.

The spelling of 12868893 in words is "twelve million, eight hundred sixty-eight thousand, eight hundred ninety-three".

Divisors: 1 3 9 97 291 873 14741 44223 132669 1429877 4289631 12868893