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12868112 = 242927733
BaseRepresentation
bin110001000101…
…101000010000
3220012202201202
4301011220100
511243234422
61135450332
7214243235
oct61055020
926182652
1012868112
11729a004
1243869a8
13288718a
1419cd78c
1511e2b92
hexc45a10

12868112 has 20 divisors (see below), whose sum is σ = 25792620. Its totient is φ = 6211968.

The previous prime is 12868103. The next prime is 12868123. The reversal of 12868112 is 21186821.

It can be written as a sum of positive squares in 2 ways, for example, as 4596736 + 8271376 = 2144^2 + 2876^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13403 + ... + 14330.

It is an arithmetic number, because the mean of its divisors is an integer number (1289631).

Almost surely, 212868112 is an apocalyptic number.

It is an amenable number.

12868112 is an abundant number, since it is smaller than the sum of its proper divisors (12924508).

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

12868112 is a wasteful number, since it uses less digits than its factorization.

12868112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27770 (or 27764 counting only the distinct ones).

The product of its digits is 1536, while the sum is 29.

The square root of 12868112 is about 3587.2150757935. The cubic root of 12868112 is about 234.3356033811.

The spelling of 12868112 in words is "twelve million, eight hundred sixty-eight thousand, one hundred twelve".

Divisors: 1 2 4 8 16 29 58 116 232 464 27733 55466 110932 221864 443728 804257 1608514 3217028 6434056 12868112