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12868384 = 25402137
BaseRepresentation
bin110001000101…
…101100100000
3220012210002211
4301011230200
511243242014
61135451504
7214244104
oct61055440
926183084
1012868384
11729a231
124386b94
132887339
1419cd904
1511e2cc4
hexc45b20

12868384 has 12 divisors (see below), whose sum is σ = 25334694. Its totient is φ = 6434176.

The previous prime is 12868381. The next prime is 12868393. The reversal of 12868384 is 48386821.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 51984 = 3580^2 + 228^2 .

It is not an unprimeable number, because it can be changed into a prime (12868381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201037 + ... + 201100.

Almost surely, 212868384 is an apocalyptic number.

It is an amenable number.

12868384 is a deficient number, since it is larger than the sum of its proper divisors (12466310).

12868384 is an equidigital number, since it uses as much as digits as its factorization.

12868384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402147 (or 402139 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 12868384 is about 3587.2529880119. The cubic root of 12868384 is about 234.3372544608.

The spelling of 12868384 in words is "twelve million, eight hundred sixty-eight thousand, three hundred eighty-four".

Divisors: 1 2 4 8 16 32 402137 804274 1608548 3217096 6434192 12868384