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12868855 = 53677013
BaseRepresentation
bin110001000101…
…110011110111
3220012210202021
4301011303313
511243300410
61135454011
7214245346
oct61056367
926183667
1012868855
11729a61a
124387307
13288760c
1419cdb5d
1511e2eda
hexc45cf7

12868855 has 8 divisors (see below), whose sum is σ = 15486912. Its totient is φ = 10265568.

The previous prime is 12868841. The next prime is 12868861. The reversal of 12868855 is 55886821.

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 12868855 - 27 = 12868727 is a prime.

It is a super-2 number, since 2×128688552 = 331214858022050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1672 + ... + 5341.

It is an arithmetic number, because the mean of its divisors is an integer number (1935864).

Almost surely, 212868855 is an apocalyptic number.

12868855 is a deficient number, since it is larger than the sum of its proper divisors (2618057).

12868855 is an equidigital number, since it uses as much as digits as its factorization.

12868855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7385.

The product of its digits is 153600, while the sum is 43.

The square root of 12868855 is about 3587.3186365306. The cubic root of 12868855 is about 234.3401134445.

The spelling of 12868855 in words is "twelve million, eight hundred sixty-eight thousand, eight hundred fifty-five".

Divisors: 1 5 367 1835 7013 35065 2573771 12868855