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12868000 = 25533217
BaseRepresentation
bin110001000101…
…100110100000
3220012202120121
4301011212200
511243234000
61135450024
7214243015
oct61054640
926182517
1012868000
117299a12
124386914
132887102
1419cd70c
1511e2b1a
hexc459a0

12868000 has 48 divisors (see below), whose sum is σ = 31626504. Its totient is φ = 5145600.

The previous prime is 12867977. The next prime is 12868003. The reversal of 12868000 is 86821.

It can be written as a sum of positive squares in 4 ways, for example, as 6697744 + 6170256 = 2588^2 + 2484^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (12868003) 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, 2392 + ... + 5608.

Almost surely, 212868000 is an apocalyptic number.

12868000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12868000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15813252).

12868000 is an abundant number, since it is smaller than the sum of its proper divisors (18758504).

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

12868000 is an equidigital number, since it uses as much as digits as its factorization.

12868000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242 (or 3224 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 12868000 is about 3587.1994647636. The cubic root of 12868000 is about 234.3349235180.

The spelling of 12868000 in words is "twelve million, eight hundred sixty-eight thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 800 1000 2000 3217 4000 6434 12868 16085 25736 32170 51472 64340 80425 102944 128680 160850 257360 321700 402125 514720 643400 804250 1286800 1608500 2573600 3217000 6434000 12868000