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12868655 = 522911239
BaseRepresentation
bin110001000101…
…110000101111
3220012210110212
4301011300233
511243244110
61135453035
7214244642
oct61056057
926183425
1012868655
11729a458
12438717b
1328874b7
1419cda59
1511e2e05
hexc45c2f

12868655 has 8 divisors (see below), whose sum is σ = 15511200. Its totient is φ = 10249056.

The previous prime is 12868651. The next prime is 12868657. The reversal of 12868655 is 55686821.

12868655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12868655 - 22 = 12868651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12868651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4475 + ... + 6764.

It is an arithmetic number, because the mean of its divisors is an integer number (1938900).

Almost surely, 212868655 is an apocalyptic number.

12868655 is a deficient number, since it is larger than the sum of its proper divisors (2642545).

12868655 is a wasteful number, since it uses less digits than its factorization.

12868655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473.

The product of its digits is 115200, while the sum is 41.

The square root of 12868655 is about 3587.2907604486. The cubic root of 12868655 is about 234.3388994472.

The spelling of 12868655 in words is "twelve million, eight hundred sixty-eight thousand, six hundred fifty-five".

Divisors: 1 5 229 1145 11239 56195 2573731 12868655